2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1742

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1742

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Control valve body replacement-Refer to Control Valve Body Replacement (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Valve Body/Service and Repair/AF40-6 - Automatic Transmission/Control Valve Body Replacement) for

replacement, setup and programming.

* TCM-Refer to Control Module References (See: Testing and Inspection/Programming and Relearning) for replacement, setup and

programming.

* Perform the Transmission Adaptive Functions (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/AF40-6 - Automatic Transmission/Transmission Adaptive Functions).

* Wiring harness-Refer to Automatic Transmission Wiring Harness Replacement (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Wiring Harness/Service and Repair) for replacement.

6T70/6T75 - Automatic Transmission

DTC P0973 or P0974

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0973

- Shift Solenoid (SS) 1 Control Circuit Low Voltage

DTC P0974

- Shift Solenoid (SS) 1 Control Circuit High Voltage

Diagnostic Fault Information

Circuit/System Description

The shift solenoid (SS) 1 is part of the control solenoid valve assembly, which has no serviceable components. SS 1 is a normally closed (NC)

ON/OFF solenoid and is controlled by the TCM through a low side driver. When the SS 1 is energized (ON), SS 1 fluid pressure is directed to the

clutch select valve 2, which allows the valve to overcome the spring pressure and move to the applied position. Power to the SS 1 is supplied by the

TCM through a high side driver (HSD). The HSD protects the circuit and components from excessive current flow. If excessive current flow is

detected, the HSD will turn OFF. When the fault is corrected, the HSD will reset.

Conditions for Running the DTC

P0973

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

* DTC P0973 has not set this ignition cycle.

P0974

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

* DTC P0974 has not set this ignition cycle.

Conditions for Setting the DTC

P0973

The control solenoid valve assembly detects a short to ground on the SS 1 control circuit for 2 seconds.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1737

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1737

1. Ensure the transmission fluid temperature is between 50-80掳C (122-176掳F).

2. Operate the vehicle in 2nd gear long enough to ensure at least a 3掳C (5掳F) rise in transmission fluid temperature, then operate the vehicle in

Park for 5 s.

3. Observe the scan tool Clutch Pressure Control Solenoid Valve 2 Current parameter, the reading should be between 0.1-1.1 A.

Circuit/System Testing

Command the Clutch Pressure Control Solenoid Valve 2 with a scan tool. The value should change from 0.0-1.0 A.

If the value does not change, turn ignition OFF, remove the K71 Transmission Control Module. Connect a test lamp between the low reference

circuit terminal 18 X2 at the K71 Transmission Control Module and the voltage supply component circuit terminal 17 X2 at the K71 Transmission

Control Module. Command the Clutch Pressure Control Solenoid Valve 2 with a scan tool. The test lamp has to illuminate brighter with increasing

current.

If the test lamp always illuminate or always does not illuminate, replace the K71 Transmission Control Module.

Component Testing

Static Test

1. Ignition OFF, remove the K71 Transmission Control Module.

2. Test for 5-5.6 ohm at 20掳C (68掳F) between the low reference circuit terminal 18 X2 and the voltage supply circuit terminal 17 X2.

瀚慖f less than the specified range, test the wiring harness for internal short. If the circuit test normal, replace the Q27B Pressure Control

Solenoid Valve 2.

3. Test for infinite resistance between each terminal and the low reference circuit terminal 18 X2 and also to the voltage supply circuit terminal

17 X2.

瀚慖f less than the specified range, replace the wiring harness.

4. If all circuit test normal, perform the Control Solenoid Valve Inspection (M36 and MXE) (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/AF40-6 - Automatic Transmission).

瀚慖f the inspection test normal, replace the control valve body.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Control valve body replacement-Refer to Control Valve Body Replacement (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Valve Body/Service and Repair/AF40-6 - Automatic Transmission/Control Valve Body Replacement) for

replacement, setup and programming.

* TCM-Refer to Control Module References (See: Testing and Inspection/Programming and Relearning) for replacement, setup and

programming.

* Perform the Transmission Adaptive Functions (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/AF40-6 - Automatic Transmission/Transmission Adaptive Functions).

* Wiring harness-Refer to Automatic Transmission Wiring Harness Replacement (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Wiring Harness/Service and Repair) for replacement.

6T70/6T75 - Automatic Transmission

DTC P0973 or P0974

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0973

- Shift Solenoid (SS) 1 Control Circuit Low Voltage

DTC P0974

- Shift Solenoid (SS) 1 Control Circuit High Voltage

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1308

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1308

6. Engine running, observe the Ignition Coil 1-6 Control Circuit Open Test Status on the scan tool. Test Status should be Ok or Not Run.

瀚慖f test status is Malfunction test for open circuit.

7. Engine running, observe the Ignition Coil 1-6 Control Circuit High Voltage Test Status on the scan tool. Test Status should be Ok or Not

Run.

瀚慖f test status is Malfunction test for short to voltage.

8. If all circuits test normal, test or replace the appropriate T8 ignition coil.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Ignition Coil Replacement - Bank 1 (See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Ignition Coil

Replacement - Bank 1)

* Ignition Coil Replacement - Bank 2 (See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Ignition Coil

Replacement - Bank 2)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement, setup, and

programming

P0353

DTC P0351-P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, or P2316 (LAU)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0351

- Ignition Coil 1 Control Circuit

DTC P0352

- Ignition Coil 2 Control Circuit

DTC P0353

- Ignition Coil 3 Control Circuit

DTC P0354

- Ignition Coil 4 Control Circuit

DTC P0355

- Ignition Coil 5 Control Circuit

DTC P0356

- Ignition Coil 6 Control Circuit

DTC P2300

- Ignition Coil 1 Control Circuit Low Voltage

DTC P2301

- Ignition Coil 1 Control Circuit High Voltage

DTC P2303

- Ignition Coil 2 Control Circuit Low Voltage

DTC P2304

- Ignition Coil 2 Control Circuit High Voltage

DTC P2306

- Ignition Coil 3 Control Circuit Low Voltage

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1064

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1064

DTCs P0111, P0112, P0113, and P0114 are Type B DTCs.

Diagnostic Aids

* If the vehicle has sat overnight, the IAT sensor and the ECT sensor values should be within 3掳C (5掳F).

* High resistance on the IAT sensor signal circuit could set a DTC.

Reference Information

Schematic Reference

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Special Tools

J 35616 Connector Test Adapter Kit

Circuit/System Verification

1. Engine idling, DTC P0111, P0112, P0113, or P0114 should not set.

2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the B65 Intake Manifold Pressure and Air Temperature sensor.

2. Remove the fuse that supplies B+ to terminal 56 X2 of the ECM.

Caution: Do NOT use a test lamp to test the continuity of the circuit. Damage to the control module may occur due to excessive current

draw.

3. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 5 ohm

between the low reference circuit terminal 1 and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance, or for a short to voltage. If the

circuit/connections test normal, replace the K20 ECM.

4. Install fuse that supplies B+ to terminal 56 X2 of the ECM.

5. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 3 and ground

瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,

replace the K20 ECM.

瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.

6. Ignition ON, verify that the scan tool IAT sensor parameter is colder than -39掳C (-38掳F).

瀚慖f warmer than the specified value, test the signal circuit terminal 2 for a short to ground. If the circuit/connections test normal, replace

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1718

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1718

DTC P0966

- Pressure Control Solenoid Valve 1 Control Circuit Low Voltage

DTC P0967

- Pressure Control Solenoid Valve 1 Control Circuit High Voltage

Diagnostic Fault Information

Typical Scan Tool Data

Circuit/System Description

The shift control solenoid (SLC1) is installed on the front valve body. The solenoid linearly control hydraulic pressure in response to signals output

from the transmission control module TCM. Through this, the SLC1 controls operating hydraulic pressure to the clutch 1 for smooth shifting.

According to each shift control solenoid assembly, the transmission shifts from 1st gear into 6th gear and vice versa. As a fail-safe function, if any

shift control solenoid assembly abnormality occurs, the TCM will disable the current to the solenoids.

Conditions for Running the DTC

P0778

* The ignition voltage is between 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* Driving in D range.

* TCM communication is normal.

* DTCs P0966 and P0967 are not set.

P0965

* The ignition voltage is between 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* Driving in D range.

* TCM communication is normal.

* The automatic transmission fluid temperature is more than 20掳C (68掳F).

* SLC1 current is more than 0.85 A.

* SLC1 target current is not changed.

P0966

* The ignition voltage is between 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* Driving in D range.

* TCM communication is normal.

* DTC P0967 is not set.

P0967

* The ignition voltage is between 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* Driving in D range.

* TCM communication is normal.

* DTC P0966 is not set.

Conditions for Setting the DTC

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1976

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1976

瀚慖f not within the specified ranges, refer to Fluid Pressure High or Low (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Testing and Inspection/Symptom Related Diagnostic Procedures/6T70/6T75 - Automatic Transmission/Fluid

Pressure High or Low).

2. Ignition OFF, remove the control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly

Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission and

Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).

3. Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test (See: Transmission and

Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6T70/6T75 - Automatic

Transmission/Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test). A pressure change should

occur for each solenoid valve.

瀚慖f the control solenoid valve assembly does not pass the performance test, replace the control solenoid valve assembly.

4. Listed in the table below, are conditions for each component that could set DTC P2714 or P2715. Carefully inspect each component for that

condition. Repair or replace as necessary.

Repair Instructions

Important:

* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and

Inspection/Programming and Relearning) following all transmission related repairs.

* Before replacing the TCM, perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See:

Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component Tests and General

Diagnostics/6T70/6T75 - Automatic Transmission/Control Solenoid Valve and Transmission Control Module Assembly Inspection).

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Control Valve Lower Body and Upper Body Replacement (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Valve

Body/Service and Repair/6T70/6T75 - Automatic Transmission/Control Valve Lower Body and Upper Body Replacement)

* Low and Reverse Clutch and 1-2-3-4 Clutch Plate Removal (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Service

and Repair/Overhaul/8. Low and Reverse Clutch and 1-2-3-4 Clutch Plate Removal)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for control solenoid valve assembly replacement,

setup, and programming

P2725

DTC P2725 or P2728-P2730

Diagnostic Instructions

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Technical Service Bulletin # 07-03-10-008C Date: 120517

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Technical Service Bulletin # 07-03-10-008C Date: 120517

Tires - Slight/Mild Edge Feathering Information

INFORMATION

Bulletin No.: 07-03-10-008C

Date: May 17, 2012

Subject: Information on Slight or Mild Tire Feathering and Recommended Practices (Normal Tire Wear Condition)

Models:

2006-2013 GM Passenger Cars and Light Duty Trucks

Supercede:

This bulletin is being revised to add model years. Please discard Corporate Bulletin Number 07-03-10-008B (Section 03 - Suspension).

This bulletin provides information regarding the normal tire wear condition of slight or mild tire feathering and recommended practices.

If a vehicle comes into a dealership with a concern of slight or mild feathering-type wear on the tires, review with the customer their past tire

rotation history. Tires should be rotated every 8,000 to 13,000 km (5,000 to 8,000 mi) for applicable vehicles with tires where a tire rotation is

possible or recommended. Refer to the owner manual and review related bulletins for information on tire rotation for vehicles with different

front/rear tire/wheel sizes.

SOME TIRE FEATHERING IS A NORMAL PART OF TIRE WEAR AND THROUGH PROPER TIRE ROTATION AND INFLATION, THIS

TIRE WEAR CAN BE MINIMIZED AND TIRE LIFE MAXIMIZED.

If the customer has not rotated the tires within the last 8,000 to 13,000 km (5,000 to 8,000 mi), a tire rotation in the modified X-pattern is necessary

to clean-up the feathering, rather than placing the vehicle on the alignment machine.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1878

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1878

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Electronic Ignition System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Electronic

Ignition System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Operate the engine for 30 seconds. Observe the DTC information with a scan tool. DTC P0351, P0352, P0353, P0354, P0355, P0356, P2300,

P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, or P2316 should not set.

2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate T8 ignition coil.

2. Ignition OFF, all vehicle systems OFF, it may take up to 2 minutes for all the systems to power down, test for less than 5 ohm between the

ground circuit terminal A and ground.

瀚慖f greater than the specified range, repair the ground circuit for an open/high resistance.

3. Ignition OFF, test for less than 5 ohm between the low reference circuit terminal B and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.

4. Ignition ON, verify that a test lamp illuminates between ignition voltage circuit terminal D and ground.

瀚慖f the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests

normal and the ignition voltage circuit fuse is open, test all the components connected to the ignition voltage circuit and replace as

necessary.

5. Engine running, observe the Ignition Coil 1-6 Control Circuit Low Voltage Test Status on the scan tool. Test Status should be Ok or Not

Run.

瀚慖f test status is Malfunction test for open or short to ground.

6. Engine running, observe the Ignition Coil 1-6 Control Circuit Open Test Status on the scan tool. Test Status should be Ok or Not Run.

瀚慖f test status is Malfunction test for open circuit.

7. Engine running, observe the Ignition Coil 1-6 Control Circuit High Voltage Test Status on the scan tool. Test Status should be Ok or Not

Run.

瀚慖f test status is Malfunction test for short to voltage.

8. If all circuits test normal, test or replace the appropriate T8 ignition coil.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1587

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1587

Diagnostic Fault Information

Typical Scan Tool Data

Circuit/System Description

The output shaft sensor is a hall-effect type sensor. The sensor faces the output shaft machined teeth surface. As the output shaft rotates, the sensor

produces a signal frequency based on the machined surface of the output shaft. This signal is transmitted to the transmission control module (TCM).

The TCM uses the output shaft sensor signal in connection with the input speed sensor signal to control engine torque, shift timing, and lock-up.

Conditions for Running the DTC

P0722

* The ignition voltage is 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* TCM communication is normal.

* Driving in D range.

Conditions for Setting the DTC

P0722

* Deviation from calculated output speed is more than 300 RPM.

* No output speed sensor pulse while receiving pulses on the input speed sensor.

* No output speed sensor pulse when vehicle speed from ABS is more than 20 km/h (13 MPH) for 300 ms.

Action Taken When the DTC Sets

* DTC P0722 is Type A DTC.

* The TCM freezes transmission adaptive functions.

* The TCM turns OFF all solenoids.

* The TCM allows the vehicle after a stop to operate only in the second gear and "R" range.

Conditions for Clearing the DTC

* DTC P0722 is Type A DTC.

* Output speed is greater than 300 RPM for more than 70 s.

* Deviation from calculated output speed is less than 5% for more than 1 s.

Diagnostic Aids

* Damage or misalignment of the counter drive gear machined teeth surface may cause a speed sensor malfunction.

* Proper torque of the output shaft sensor mounting bolt is critical to proper output shaft sensor operation.

Reference Information

Schematic Reference

Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams/Electrical

Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Technical Service Bulletin # 08-07-30-026A Date: 110517

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Technical Service Bulletin # 08-07-30-026A Date: 110517

A/T - Slight Vehicle Movement In Park At Start Up

INFORMATION

Bulletin No.: 08-07-30-026A

Date: May 17, 2011

Subject: Information on Slight Vehicle Movement in Park at Start Up After Cold Soak

Models:

2012 and Prior GM Passenger Cars and Light Duty Trucks

Equipped with Automatic Transmission

Supercede:

This bulletin is being revised to add the 2010-2012 model years. Please discard Corporate Bulletin Number 08-07-30-026 (Section 07 -

Transmission/Transaxle).

Some vehicles may rock or move slightly forward or rearward while in park at start up after cold soak. This condition may be accompanied by a

clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 134

feature, if equipped.

This slight movement is due to the residual transmission fluid in the clutch packs that creates a partial apply on start up. This movement is stopped

by the parking pawl and/or transmission fluid exhausting completely from the clutch packs.

This slight movement has no adverse affects on the transmission and no repair should be attempted. This condition is normal. This can be verified

by comparing with another identically built vehicle under the same cold conditions.

To prevent this condition from occurring, the parking brake should be utilized as per the Owner's Manual recommendations anytime the vehicle is

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1774

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1774

P1702

DTC P1702-P1704

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P1702

- Transmission Clutch 1 Stuck On

DTC P1703

- Transmission Clutch 1 Performance

DTC P1704

- Transmission Clutch 1 Slip Detected

Diagnostic Fault Information

Typical Scan Tool Data

Circuit/System Description

When the vehicle is stopped in range D, the transmission enters a neutral condition by releasing the clutch C1. By reducing drag loss of the torque

converter, the load on the engine is lightened, fuel economy is enhanced, and idling vibration is reduced.

Conditions for Running the DTC

P1702, P1703, P1704

* The ignition voltage is between 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* Driving in D range.

* Transmission control module (TCM) communication is normal.

* Transmission fluid temperature is more than 10掳C (50掳F).

Conditions for Setting the DTC

P1702

* Clutch C1 hydraulic pressure is less than 26 kPa (3.8 PSI).

* Input revolution is less than 400 RPM for more than 5 s.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1841

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1841

depressed. The APP sensor 2 signal voltage increases as the pedal is depressed, from approximately 0.5 volt at rest to approximately 2 volts with

the accelerator pedal fully depressed.

Conditions for Running the DTCs

* The ignition is ON or the engine is operating.

* The ignition voltage is greater than 8 volts.

* The DTCs run continuously once the above conditions are met for greater than 200 ms.

Conditions for Setting the DTC

P2122

* The APP sensor 1 voltage is less than 0.74 volt and APP sensor 2 voltage is less than 0.62 V for greater than 1 s or for a cumulative time of 4

s.

OR

* The APP sensor 1 voltage is less than 0.74 volt for greater than 1 s or for a cumulative time of 4 s.

P2123

The APP sensor 1 voltage is greater than 4.82 volts for greater than 1 s or for a cumulative time of 4 s.

P2127

The APP sensor 2 voltage is less than 0.63 volt for greater than 1 s or for a cumulative time of 4 s.

P2128

The APP sensor 2 voltage is greater than 4.82 volts for greater than 1 s or for a cumulative time of 4 s.

P2138

* The ECM detects that the voltage difference between APP sensor 1 and 2 is greater than 0.25 volts when the sensor voltages are between

1.91-1.25 V.

* The ECM detects that the voltage difference between APP sensor 1 and 2 is greater than 0.31 volts when the sensor voltages are between

1.91-2.63 V.

* The ECM detects that the voltage difference between APP sensor 1 and 2 is greater than 1.7 volts when the sensor voltages are greater than

2.63 V.

* DTC P2138 sets if any of the above conditions exist for greater than 1 s or for a cumulative time of 4 s.

Action Taken When the DTC Sets

DTCs P2122, P2123, P2127, P2128, and P2138 are Type A DTCs.

Conditions for Clearing the DTC

DTCs P2122, P2123, P2127, P2128, and P2138 are Type A DTCs.

Diagnostic Aids

Test the current output of the 5-volt reference circuits if you suspect high resistance in the circuit. The current output should be greater than 80 mA

for APP 1 and greater than 50 mA for APP 2.

Reference Information

Schematic Reference

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Throttle Actuator Control (TAC) System Description (See: Powertrain Management/Computers and Control Systems/Description and

Operation/Throttle Actuator Control (TAC) System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1759

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1759

Action Taken When the DTC Sets

* DTCs P0989 and P0990 are Type C DTCs.

* The TCM freezes transmission adaptive functions for the reverse and low clutch and the 4-5-6 clutch.

Conditions for Clearing the DTC

DTCs P0989 and P0990 are Type C DTCs.

Diagnostic Aids

A TFP switch may malfunction due to normal debris in the transmission fluid causing a TFP Switch DTC to intermittently set. This type of failure

should not be immediately noticeable to a customer, as the switch outputs are used for shift adaptives and do not cause transmission symptoms

unless the switch malfunctions continuously for an extended period of time.

Reference Information

Schematic Reference

Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)

Description and Operation

* Transmission General Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/6T70/6T75 - Automatic Transmission/Transmission General Description)

* Electronic Component Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/6T70/6T75 - Automatic Transmission/Electronic Component Description) for control solenoid (w/body and TCM) valve assembly

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Special Tools

DT-47825-20 - Jumper Harness

Circuit/System Verification

1. If there are any other transmission related DTCs set, diagnose those DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (

See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).

2. Engine idling in Park with parking brake applied, and drive wheels chocked.

3. Monitor the TFP Switch 1, TFP Switch 3, TFP Switch 4, and TFP Switch 5 parameters with a scan tool.

4. Place the gear select lever in Park, Reverse, and Neutral range. Verify the TFP Switch 1, TFP Switch 3, TFP Switch 4, and TFP Switch 5

parameter states are correct for each range. Refer to Transmission Fluid Pressure Switch Logic (See: Specifications/Mechanical

Specifications/Automatic Transmission/Transaxle/System Specifications/6T70/6T75 - Automatic Transmission/Transmission Fluid Pressure

Switch Logic).

5. Place the gear select lever in Drive range. Command the Shift Transmission with a scan tool through all forward ranges. Verify the TFP

Switch 1, TFP Switch 3, TFP Switch 4, and TFP Switch 5 parameter states are correct for each range. Refer to Transmission Fluid Pressure

Switch Logic (See: Specifications/Mechanical Specifications/Automatic Transmission/Transaxle/System Specifications/6T70/6T75 -

Automatic Transmission/Transmission Fluid Pressure Switch Logic).

6. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

Note: You must perform the Circuit/System Verification first.

1. Ignition OFF. Remove the control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly

Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission and

Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).

2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6T70/6T75 - Automatic Transmission/Control

Solenoid Valve and Transmission Control Module Assembly Inspection).

3. Place the control solenoid valve assembly on a clean work surface near the transmission assembly.

4. Connect DT-47825-20 - jumper harness between the vehicle wire harness electrical connector, and the control solenoid valve assembly

electrical connector.

5. Ignition ON, verify with a scan tool that the TFP Switch 1, TFP Switch 3, TFP Switch 4, and TFP Switch 5 parameters changes states when

gently pushing on each TFP switch with the eraser end of a pencil.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1306

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1306

- Ignition Coil 5 Control Circuit Low Voltage

DTC P2313

- Ignition Coil 5 Control Circuit High Voltage

DTC P2315

- Ignition Coil 6 Control Circuit Low Voltage

DTC P2316

- Ignition Coil 6 Control Circuit High Voltage

Diagnostic Fault Information

Circuit/System Description

The ignition system on this engine uses individual ignition coils and ignition control (IC) circuits for each cylinder. Ignition voltage is supplied to

each bank of ignition coils. The engine control module (ECM) controls the ignition system operation. The ECM controls each coil using the IC

circuits. The ECM commands the IC circuit low when a spark event is requested.

The sequencing and timing are ECM controlled.

Conditions for Running the DTC

* The engine is operating.

* The ignition voltage is between 10-18 volts.

* The engine speed is between 400-5,000 RPM.

* The DTCs run continuously once per crankshaft revolution after the above conditions are met for 20 crankshaft revolutions.

Conditions for Setting the DTC

P0351-P0356

The ECM detects the ignition control circuit is open for greater than 4 seconds or a cumulative of 30 seconds.

P2300, P2303, P2306, P2309, P2312, or P2315

The ECM detects the ignition control circuit is shorted to ground for greater than 4 seconds or a cumulative of 30 seconds.

P2301, P2304, P2307, P2310, P2313, or P2316

The ECM detects the ignition control circuit is shorted to voltage for greater than 4 seconds or a cumulative of 30 seconds.

Action Taken When the DTC Sets

DTCs P0351, P0352, P0353, P0354, P0355, P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, and P2316

are Type B DTCs.

Conditions for Clearing the DTC

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1604

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1604

Circuit/System Description

The shift control solenoid assembly (SLC1, SLC2, SLC3, SLB1) and the line pressure control solenoid (SLT) are installed on the front valve body.

The solenoids linearly control hydraulic pressure in response to signals output from the transmission control module (TCM). SLC1, SLC2, SLC3,

SLB1 controls hydraulic pressure to the clutches (C1, C2, C3) and brake (B1) for smooth shifting. According to each shift control solenoid

assembly, the transmission shifts from 1st gear into 6th gear and vice versa. As a fail-safe function, if any shift control solenoid assembly

abnormality occurs, the TCM will disable the current to the solenoids.

Conditions for Running the DTC

* The ignition voltage is 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* TCM communication is normal.

* Transmission fluid temperature is higher than 20掳C (68掳F).

* DTCs P0716. P0717, P0721 and P0722 are not set.

Conditions for Setting the DTC

* Driving in D range, 5th gear.

* Output speed more than 500 RPM.

* Throttle position more than 10%.

* Measured gear ratio deviates more than 20% from expected ratio.

* Measured gear ratio deviates within 4% from 4th or 6th gear ratio.

* Determined after 12 times lasting 1 s or more.

Action Taken When the DTC Sets

* DTC P0735 is a Type C DTC.

* Torque limitation in "D" range 150 Nm (110 lb ft), in "R" range 170 Nm (125 lb ft).

* The TCM freezes transmission adaptive functions.

* The TCM turns OFF all solenoids.

* The TCM allows the vehicle after a stop to operate only in the second gear and "R" range.

Conditions for Clearing the DTC

* DTC P0735 is a Type C DTC.

* Measured gear ratio deviates less than 4% from expected ratio.

Diagnostic Aids

Ensure the transmission fluid level, color and odor is correct and there are no leaks. If there are any other transmission DTCs set, diagnose those

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1825

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1825

The ECM detects an overheat condition with the output driver. The condition exists for 1 s.

P2103

The ECM detects an over load condition with the output driver. The condition exists for 1 s.

P2119

The ECM determines that the throttle valve did not return to the rest position within 1 s. The condition exists for greater than 1 s, or a cumulative of

10 s.

Action Taken When the DTC Sets

DTCs P0638, P2100, P2101, P2102, P2103, and P2119 are Type A DTCs.

Conditions for Clearing the DTC

DTCs P0638, P2100, P2101, P2102, P2103, and P2119 are Type A DTCs.

Diagnostic Aids

Inspect for a condition in which the throttle valve may have been held open. For example, ice may have formed in the throttle bore causing the

throttle valve not to close.

Reference Information

Schematic Reference

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Throttle Actuator Control (TAC) System Description (See: Powertrain Management/Computers and Control Systems/Description and

Operation/Throttle Actuator Control (TAC) System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Special Tools

* EL 34730-405 - Injector Test Lamp

* For equivalent regional tools, refer to Special Tools (See: Powertrain Management/Computers and Control Systems/Tools and Equipment).

Circuit/System Verification

1. Ignition ON, observe the DTC information with a scan tool. Verify DTC P0121, P0122, P0123, P0221, P0222, or P0223 is not set.

瀚慖f a DTC is set refer to DTC P0121-P0123 or P0221-P0223 (Without LF1, LFW) ( See: P Code Charts/P0121) for further diagnosis.

2. Observe the scan tool Throttle Position Sensor voltage parameters. Verify that Throttle Position Sensor 1 voltage is between 3.24-3.54 V, and

Throttle Position Sensor 2 voltage is between 1.36-1.86 V.

瀚慖f either Throttle Position Sensor voltage is not within the specified range refer to DTC P0121-P0123 or P0221-P0223 (Without LF1,

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1693

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1693

Circuit/System Description

The line pressure control (PC) solenoid is part of the control solenoid valve assembly which has no serviceable components. The normally high line

PC solenoid regulates and directs the PC solenoid oil pressure to the pressure regulator valve and isolator valve. Increasing line PC solenoid

pressure increases transmission line pressure. The transmission control module (TCM) varies the current to the line PC solenoid through a low side

driver. Decreasing the current to the line PC solenoid increases line PC solenoid oil pressure by closing OFF the solenoid exhaust port. Increasing

the current to the line PC solenoid decreases line PC oil pressure by opening the solenoid exhaust port. Line PC solenoid power is supplied by the

TCM through a high side driver (HSD). The HSD protects the circuit and components from excessive current flow. If excessive current flow is

detected, the HSD will turn OFF. When the fault is corrected the HSD will reset.

Conditions for Running the DTC

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

Conditions for Setting the DTC

P0961

The TCM detects an internal electrical malfunction of the line PC solenoid where the measured line PC solenoid current does not equal the

commanded line PC solenoid current for 5 seconds.

P0962

The TCM detects a short to ground or an open/high resistance on the line PC solenoid control circuit for 1 second.

P0963

The TCM detects an open or a short to voltage on the line PC solenoid control circuit for 1 second.

Action Taken When the DTC Sets

P0961 or P0963

* DTCs P0961 and P0963 are Type C DTCs.

* The TCM freezes transmission adaptive functions.

* The TCM commands maximum line pressure.

P0962

* DTC P0962 is a Type A DTC.

* The TCM defaults the transmission to reverse and 5th gear.

* The TCM inhibits the torque converter clutch (TCC).

* The TCM commands maximum line pressure.

* The TCM freezes transmission adaptive functions.

* The TCM turns the high side driver OFF.

* The TCM inhibits Tap Up/Down function.

* The TCM inhibits manual shifting of forward gears.

* The TCM enables torque management.

Conditions for Clearing the DIC/DTC

* DTCs P0961 and P0963 are Type C DTCs.

* DTC P0962 is a Type A DTC.

Reference Information

Connector End View Reference

* Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

* Inline Harness Connector End Views (See: Diagrams/Connector Views/Multiple Junction Connector/Connector End Views By Number)

Description and Operation

Transmission General Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/6T70/6T75 -

Automatic Transmission/Transmission General Description)

Electrical Information Reference

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Technical Service Bulletin # 01-08-51-003C Date: 110921

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Technical Service Bulletin # 01-08-51-003C Date: 110921

Body - Application of Anti-Corrosion Materials

INFORMATION

Bulletin No.: 01-08-51-003C

Date: September 21, 2011

Subject: Application of Anti-Corrosion Materials

Models:

2012 and Prior GM Passenger Cars and Light Duty Trucks

Supercede:

This bulletin is being revised to add model years and update the information and product/supplier tables. Please discard Corporate Bulletin Number

01-08-51-003B (Section 08 - Body and Accessories).

After a collision, some vehicle structure areas such as frame rails, cross-members and rocker panel sections may need to be repaired. In most cases,

the anti-corrosion materials need to be removed to perform these repairs. These materials are classified into two types: Closed Cavity coatings and

Undercoat coatings. The primary difference is the way the products set up or "dry". Both are intended to protect the surface they are applied to from

corrosion caused by water, salt water or Magnesium Chloride blended de-icing compounds used to thaw icy winter roads. They also can provide a

measure of sound deadening.

The Closed Cavity coatings remain sticky to the touch and will seep into seams initially and over extended periods of time. Closed Cavity coatings

provide the best corrosion protection inside of rocker panel sections, pillar sections, frame rails, cross-members, doors, rear compartment lids and

closed areas of hoods - anywhere that is concealed or closed off to exterior surfaces.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 128

The Undercoat coatings are "dry to the touch" and offer the best corrosion protection and sound deadening for floor pans, wheelhouses, inside rear

compartment and underhood areas - anywhere the coated surface is exposed.

Below is a listing of Undercoat coatings and Closed Cavity coatings that GM believes to be reliable. While others may exist, we have found these

products, or equivalents to them, can be used with satisfactory results. Always use these products according to their manufacturer's

recommendations.

Undercoating and Closed Cavity Coatings

The following products are available from *Automotive International/Valugard.

The following products are available through your local *3M(R) distributor. Information about 3M(R) product retailers in your area may be

obtained at 1-866-364-3577 or at www.mmm.com/automotive.

The following products are available from *Crest Industries, Inc. at 1-800-822-4100 or www.crestauto.com.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 129

The following products are available from *Kent Automotive. Contact them at 1-888-YES-KENT (888-937-5368) or at

www.kent-automotive.com.

*We believe these sources and their products to be reliable. There may be additional manufacturers of such material. General Motors does not

endorse, indicate any preference for or assume any responsibility for the products from these firms or for any such items which may be available

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1324

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1324

瀚慖f the voltage is less than the specified range, test for a short to ground or an open/high resistance in the signal circuit. If

circuit/connections test normal, replace the ECM.

7. If all circuits/connections test normal, replace the camshaft position sensor.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust (See: Powertrain Management/Computers and Control

Systems/Camshaft Position Sensor/Service and Repair/Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust)

* Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake (See: Powertrain Management/Computers and Control

Systems/Camshaft Position Sensor/Service and Repair/Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake)

* Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust (See: Powertrain Management/Computers and Control

Systems/Camshaft Position Sensor/Service and Repair/Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust)

* Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake (See: Powertrain Management/Computers and Control

Systems/Camshaft Position Sensor/Service and Repair/Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement, setup, and

programming

P0367

DTC P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, or P0393 (LAU)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0341

- Intake Camshaft Position Sensor Performance Bank 1

DTC P0342

- Intake Camshaft Position Sensor Circuit Low Voltage Bank 1

DTC P0343

- Intake Camshaft Position Sensor Circuit High Voltage Bank 1

DTC P0346

- Intake Camshaft Position Sensor Performance Bank 2

DTC P0347

- Intake Camshaft Position Sensor Circuit Low Voltage Bank 2

DTC P0348

- Intake Camshaft Position Sensor Circuit High Voltage Bank 2

DTC P0366

- Exhaust Camshaft Position Sensor Performance Bank 1

DTC P0367

- Exhaust Camshaft Position Sensor Circuit Low Voltage Bank 1

DTC P0368

- Exhaust Camshaft Position Sensor Circuit High Voltage Bank 1

DTC P0391

- Exhaust Camshaft Position Sensor Performance Bank 2

DTC P0392

- Exhaust Camshaft Position Sensor Circuit Low Voltage Bank 2

DTC P0393

- Exhaust Camshaft Position Sensor Circuit High Voltage Bank 2

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1852

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1852

3. Engine at normal operating temperature, observe the Average Total Fuel Trim parameter with a scan tool. The Average Total Fuel Trim

should be between -22 to +23 %.

瀚慖f not within the specified range, verify none of the following conditions exist:

* A mass air flow sensor signal that is skewed-If the Short Term Fuel Trim parameter changes greater than 20 % when the MAF sensor is

disconnected, refer to DTC P0101 (LAU) (See: P Code Charts/P0101)DTC P0101 (LF1) (See: P Code Charts/P0101).

* The air intake system after the MAF sensor for vacuum leaks

* Fuel contamination-Refer to Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool) (See: Powertrain Management/Fuel Delivery and

Air Induction/Fuel/Testing and Inspection/Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool))Alcohol/Contaminants-in-Fuel

Diagnosis (Without Special Tool) (See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component

Tests and General Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool)) and Fuel System Cleaning (See:

Powertrain Management/Fuel Delivery and Air Induction/Service and Repair).

* Splits, kinks, or improper connections at the vacuum hoses.

* The fuel system is operating lean. Refer to Fuel System Diagnosis (LF1 China) (See: Powertrain Management/Fuel Delivery and Air

Induction/Fuel Pump/Testing and Inspection/Fuel System Diagnosis (China))Fuel System Diagnosis (LF1 Except China) (See:

Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Testing and Inspection/Fuel System Diagnosis (Except China))Fuel

System Diagnosis (LAU China) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Testing and Inspection/Fuel

System Diagnosis (China))Fuel System Diagnosis (LAU Except China) (See: Powertrain Management/Fuel Delivery and Air

Induction/Fuel Pump/Testing and Inspection/Fuel System Diagnosis (Except China)).

* Vacuum leaks at the intake manifold or throttle body

* Leaking crankcase ventilation system

* The engine control module grounds for being clean, tight, and in the correct locations

* A high engine oil level condition-A high engine oil level causes oil residue to form on the mass air flow sensor, causing a lean indication.

The MAF sensor does not need to be replaced.

* Vacuum leaks that only affect one bank of the engine-For example, the intake manifold, the injector O-rings.

* Lean injectors-Refer to Fuel Injector Solenoid Coil Test (LAU) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection/Fuel Injector Solenoid Coil Test)Fuel Injector Solenoid Coil Test (LF1, LFW) (See: Powertrain

Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and Inspection/Fuel Injector Solenoid Coil Test).

* Missing, restricted, or leaking exhaust components-Refer to Symptoms - Engine Exhaust (See: Engine, Cooling and Exhaust/Exhaust

System/Testing and Inspection/Symptoms - Engine Exhaust).

* The heated oxygen sensor (HO2S) is installed securely and the electrical connector is not contacting the exhaust system.

* An engine mechanical condition-Refer to Symptoms - Engine Mechanical (See: Engine, Cooling and Exhaust/Engine/Testing and

Inspection/Symptom Related Diagnostic Procedures/Symptoms - Engine Mechanical).

4. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

P2188

DTC P2178 or P2188

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P2178

- Fuel Trim System Rich at Cruise or Acceleration

DTC P2188

- Fuel Trim System Rich at Idle

Circuit Description

The engine control module (ECM) controls the air/fuel metering system in order to provide the best possible combination of driveability, fuel

economy, and emission control. Fuel delivery is controlled differently during Open and Closed Loop. During Open Loop, the ECM determines fuel

delivery based on sensor signals without heated oxygen sensor (HO2S) input. During Closed Loop, the HO2S inputs are added and used by the

ECM to calculate short and long term fuel trim fuel delivery adjustments. If the HO2S indicate a lean condition, fuel trim values will be above 0

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1316

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1316

Circuit/System Description

The ignition system on this engine uses individual ignition coils and ignition control (IC) circuits for each cylinder. Ignition voltage is supplied to

each bank of ignition coils. The engine control module (ECM) controls the ignition system operation. The ECM controls each coil using the IC

circuits. The ECM commands the IC circuit low when a spark event is requested.

The sequencing and timing are ECM controlled.

Conditions for Running the DTC

* The engine is operating.

* The ignition voltage is between 10-18 volts.

* The engine speed is between 400-5,000 RPM.

* The DTCs run continuously once per crankshaft revolution after the above conditions are met for 20 crankshaft revolutions.

Conditions for Setting the DTC

P0351-P0356

The ECM detects the ignition control circuit is open for greater than 4 seconds or a cumulative of 30 seconds.

P2300, P2303, P2306, P2309, P2312, or P2315

The ECM detects the ignition control circuit is shorted to ground for greater than 4 seconds or a cumulative of 30 seconds.

P2301, P2304, P2307, P2310, P2313, or P2316

The ECM detects the ignition control circuit is shorted to voltage for greater than 4 seconds or a cumulative of 30 seconds.

Action Taken When the DTC Sets

DTCs P0351, P0352, P0353, P0354, P0355, P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, and P2316

are Type B DTCs.

Conditions for Clearing the DTC

DTCs P0351, P0352, P0353, P0354, P0355, P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, and P2316

are Type B DTCs.

Diagnostic Aids

* Inspect the ignition coils for aftermarket devices. An aftermarket device connected to the ignition coil circuits, may cause this DTC to set.

* If the condition is intermittent, moving the related harnesses and connectors, with the engine operating, while monitoring the appropriate scan

tool Misfire Current Cylinder parameter may help to isolate the condition.

Reference Information

Schematic Reference

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Electronic Ignition System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Electronic

Ignition System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1630

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1630

* Commanded Gear is 1st locked.

* Gearbox Slip is 200 RPM up or greater for 3 seconds.

* If above conditions exist, the TCM will command second range. If the gear ratio is between 2.7 and 3.0 for 1 second, the counter will

increment, and the DTC will set after 5 occurrences.

Action Taken When the DTC Sets

* DTC P0756 is a Type A DTC.

* The TCM inhibits Tap Up/Down function.

* The TCM inhibits manual shifting of forward gears.

* The TCM commands maximum line pressure.

* The TCM freezes transmission adaptive functions.

* The TCM limits the transmission to reverse, first, and third range operation.

Conditions for Clearing the DTC

DTC P0756 is a Type A DTC.

Reference Information

Schematic Reference

Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)

Connector End View Reference

* Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

* Inline Harness Connector End Views (See: Diagrams/Connector Views/Multiple Junction Connector/Connector End Views By Number)

Description and Operation

Transmission General Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/6T70/6T75 -

Automatic Transmission/Transmission General Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Note: If other DTCs are set, diagnose those DTCs first.

1. Perform the Transmission Fluid Level and Condition Check (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing

and Inspection/Component Tests and General Diagnostics/6T70/6T75 - Automatic Transmission/Transmission Fluid Level and Condition

Check) to verify correct fluid level and condition.

Note: Perform a scan tool snapshot, during the road test.

2. Perform the Road Test (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Initial Inspection and

Diagnostic Overview). Verify the transmission operation performs as indicated, in the road test instructions.

3. Review the scan tool snapshot transmission data parameters. Verify the engine and transmission data parameters display the correct values in

all forward gear ranges:

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 2039

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 2039

Circuit/System Verification

1. Engine running for 10 seconds.

2. Ignition ON, engine OFF, verify the DTC U0400-U05FF is not set.

瀚慖f the DTC U0400-U05FF is set along with other DTCs set, diagnose all other codes first. Refer to Diagnostic Trouble Code (DTC) List -

Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).

瀚慖f the DTC U0400-U05FF is set without other DTCs set, program the control module specified by the DTC descriptor. If the DTC resets,

replace the appropriate control module.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

Control Module References (See: Testing and Inspection/Programming and Relearning) for control module replacement, setup, and programming

U1500

DTC U1500-U15BF

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

Refer to Control Module U Code List (See: Diagnostic Trouble Code Descriptions/Control Module U Code List).

Circuit/System Description

The serial data is transmitted over a Local Interconnect Network (LIN) single wire network circuit bus between a master control module and other

control modules within a particular subsystem. If serial data communication is lost between any of the control modules on the LIN bus network, a

no communication code against the non-communicating control module will be set. A master control module is the one that reports the non

communication code. Note: a loss of serial data communications DTC does not represent a failure of the master control module that set it.

Diagnostic Aids

* A control module may have a U-code stored in history that does not require any repairs. Issues with late or corrupted messages between

control modules can be temporary with no apparent symptom or complaint; this does not mean the control module is faulty. Do not replace a

control module based only on a history U-code.

* Do not replace a control module reporting a U-code. The U-code identifies which control module needs to be diagnosed for a communication

issue.

* Communication will be available between the master control module and the scan tool if there is a loss of communications with any of the

other control modules on the LIN bus network.

* An open in the LIN bus serial data circuit between the splice pack and a module will only affect that specific module. This type of failure will

set a loss of communication DTC for each control module affected and the other control modules will still communicate.

Reference Information

Schematic Reference

Data Communication Schematics (See: Powertrain Management/Computers and Control Systems/Information Bus/Diagrams/Electrical Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Data Link Communications Description and Operation (See: Powertrain Management/Computers and Control Systems/Information

Bus/Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1199

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1199

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Observe the scan tool Cylinder 1-6 Current Misfire Counter. The Cylinder 1-6 Current Misfire Counters should not increment.

2. Engine operating, observe the scan tool DTC information. DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265,

P0267, P0268, P0270, P0271, P0273, P0274, P0276, and P0277 should not set.

3. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that are captured in the Freeze Frame/Failure Records Data List.

Circuit/System Testing

1. Ignition OFF, disconnect the fuel injector multi-way harness connector X145.

Note: Testing for steps 2 through 4 is performed on the ECM side of the multi-way harness connector.

2. Ignition ON, connect a test lamp between each ignition circuit terminal 1/2 and ground. The test lamp should illuminate at each ignition

circuit.

瀚慖f the test lamp does not illuminate, test the ignition circuits for a short to ground, or an open/high resistance. If the circuits test normal

and the ignition circuit fuse is open, test or replace the appropriate Q17 fuel injector.

3. Test for 2.6-4.6 V between the appropriate fuel injector control circuit listed below and ground.

* Injector 1 terminal 3

* Injector 2 terminal 6

* Injector 3 terminal 4

* Injector 4 terminal 7

* Injector 5 terminal 5

* Injector 6 terminal 8

瀚慖f less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace

the K20 Engine Control Module.

瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control

Module.

4. Probe the appropriate fuel injector control circuit listed below with a test lamp connected to B+. Engine cranking, verify the test lamp flashes.

* Injector 1 terminal 3

* Injector 2 terminal 6

* Injector 3 terminal 4

* Injector 4 terminal 7

* Injector 5 terminal 5

* Injector 6 terminal 8

瀚慖f the test lamp remains OFF, test the control circuit for a high resistance. If the circuit/connections test normal, replace the K20 Engine

Control Module.

Note: Testing for steps 5 and 6 is performed on the fuel injector side of the multi-way harness connector. It may be necessary to remove the

intake manifold to isolate the condition.

5. Ignition OFF, test for infinite resistance between the ignition voltage circuit terminal listed below and ground.

* Injector 1 terminal 3

* Injector 2 terminal 6

* Injector 3 terminal 4

* Injector 4 terminal 7

* Injector 5 terminal 5

* Injector 6 terminal 8

瀚慖f not the specified value, repair the ignition voltage, or control circuit, for a short to ground. If the circuits/connections test normal, test

or replace the appropriate Q17 fuel injector.

6. Test for 12-16 ohm between the appropriate ignition voltage circuit terminal 1 or 2 and each fuel injector control circuit listed below.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1457

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1457

Fuel Pump Control Module

DTC P0601-P0604, P0606, or P062F (Fuel Pump Control Module)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0601

- Control Module Read Only Memory (ROM)

DTC P0602

- Control Module Not Programmed

DTC P0603

- Control Module Long Term Memory Reset

DTC P0604

- Control Module Random Access Memory (RAM)

DTC P0606

- Control Module Internal Performance

DTC P062F

- Control Module Long Term Memory Performance

Circuit/System Description

The internal fault detection is handled inside the fuel pump control module. No external circuits are involved.

Conditions for Running the DTC

The fuel pump control module runs the program to detect an internal fault when power up is commanded. The only requirements are voltage and

ground. This program runs even if the voltage is out of the valid operating range.

Conditions for Setting the DTC

The fuel pump control module has detected an internal malfunction.

Action Taken When the DTC Sets

DTC P0601, P0602, P0603, P0604, P0606 and P062F are type A DTCs.

Conditions for Clearing the DTC

DTC P0601, P0602, P0603, P0604, P0606 and P062F are type A DTCs.

Reference Information

Description and Operation

Fuel System Description (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and Operation)Fuel System

Description (LAU or LY7) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1115

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1115

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Note: It may take up to 8 minutes for the DTC to set.

1. With the engine at normal operating temperature, operate the engine above 1,200 RPM for 2 minutes and then allow the engine to idle. DTCs

P0135 or P0141 should not set.

2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate B52 HO2S.

2. Ignition ON, test for B+ on the HO2S ignition circuit terminal 1 of the HO2S harness connector.

瀚慖f less than the specified value, repair the ignition voltage circuit of the HO2S heater for a short to ground or an open/high resistance.

3. Ignition OFF, connect a test lamp between the heater control circuit terminal 2 and B+. The test light should not illuminate.

瀚慖f test lamp illuminates, test the heater control circuit for a short to ground. If the circuit/connections test normal, replace the K20 ECM.

4. Idle the engine, and verify the test lamp illuminates or flashes.

瀚慖f the test lamp is always OFF, test the control circuit terminal 2 for an open/high resistance. If the circuit/connections test normal, replace

the K20 ECM.

Note: The control circuit for the HO2S heater is pulled-up to voltage within the ECM, 2.0-3.0 V on the control circuit is normal.

5. Ignition ON, test for 2.0-3.0 V between the control circuit terminal 2 and ground.

瀚慖f not within the specified range, test the control circuit for a short to voltage. If the circuit/connections test normal, replace the K20

ECM.

6. If all circuits/connections test normal, test or replace the B52 HO2S.

Component Testing

1. Ignition OFF, disconnect the harness connector at the appropriate B52 heated oxygen sensor (HO2S) sensor.

2. Test for 5-25 ohm between the control terminal 2 and the ignition terminal 1 of the B52 heated oxygen sensor (HO2S) sensor.

瀚慖f not within the specified range, replace the B52 HO2S sensor.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1073

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1073

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the B34 ECT sensor.

Caution: Do NOT use a test lamp to test the continuity of the circuit. Damage to the control module may occur due to excessive current

draw.

Note: The control module or the sensor may be damaged if the circuit is shorted to battery positive voltage.

2. Test for less than 5 ohm between the low reference circuit terminal 2 and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance, or for a short to voltage. If the circuit tests

normal, replace the K20 ECM.

3. Ignition ON, verify that the scan tool ECT sensor parameter is at -40掳C (-40掳F).

瀚慖f greater than the specified value, test the signal circuit terminal 1 for a short to ground. If the circuit tests normal, replace the K20 ECM.

Note: If the fuse in the jumper wire opens, the signal circuit is shorted to a voltage and the sensor may be damaged.

4. Ignition ON, install a 3 A fused jumper wire between the signal circuit terminal 1 and the low reference circuit terminal 2. Verify the ECT

sensor parameter is greater than 142掳C (288掳F).

瀚慖f less than the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace

the K20 ECM.

5. If all circuits test normal, test or replace the B34 ECT sensor.

Component Testing

1. Ignition OFF, disconnect the harness connector at the B34 engine coolant temperature (ECT) sensor.

Note: A thermometer can be used to test the sensor off the vehicle.

2. Test the ECT sensor by varying the sensor temperature while monitoring the sensor resistance. Compare the readings with the Temperature

Versus Resistance - Engine Coolant Temperature Sensor (See: Powertrain Management/Computers and Control

Systems/Specifications/Temperature Versus Resistance - Engine Coolant Temperature Sensor) table and verify that the resistance is within 5

% of the specification.

瀚慖f not within the specified range, replace the B34 ECT sensor.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Engine Coolant Temperature Sensor Replacement (LF1) (See: Engine, Cooling and Exhaust/Cooling System/Engine - Coolant Temperature

Sensor/Switch/Coolant Temperature Sensor/Switch (For Computer)/Service and Repair)Engine Coolant Temperature Sensor Replacement

(LAU) (See: Engine, Cooling and Exhaust/Cooling System/Engine - Coolant Temperature Sensor/Switch/Coolant Temperature

Sensor/Switch (For Computer)/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P0119

DTC P0119 (LAU)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions)provides an overview of each diagnostic category.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1785

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1785

P1751

DTC P1751

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC P1751

- Shift Valve 1 Performance

Circuit/System Description

The shift solenoid (SS) 1 is part of the control solenoid valve assembly, which has no serviceable components. SS 1 provides fluid pressure to

control the operation of the clutch select valve 2, which is located in the control valve lower body assembly. SS 1, in conjunction with clutch select

valve 2, controls the pressure path to the reverse and low clutch and 4-5-6 clutch. A diagnostic test is performed by the transmission control module

(TCM) to determine the state of the clutch select valve 2. During this diagnostic test, the TCM commands the SS 1 ON, supplying pressure to move

the clutch select valve 2 toward its spring. At the same time, line pressure is elevated slightly to assist the spring side pressure. If the spring is

broken, or the clutch select valve 2 cannot move due to another mechanical condition, the DTC will set.

Conditions for Running the DTC

* No DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0207,

P0208, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, P0401, P042E, P0716, P0717, P0722, P0723, P0741, P0742,

P1751, P2763, or P2764.

* Current gear is not 2nd.

* The engine speed is greater than 400 RPM for greater than 5 seconds.

* The ignition voltage is 8.6 volts or greater.

* The transmission fluid temperature (TFT) is 20-130掳C (68-266掳F).

* The calc. throttle position is 8 percent or greater.

* The engine torque is greater than 80 Nm (59 lb ft).

* The transmission input speed is greater than 1200 RPM.

* No upshift or downshift in process.

Conditions for Setting the DTC

The TCM detects attained gear slip is 100 RPM or greater for 1 second.

Action Taken When the DTC Sets

DTC P1751 is a Type B DTC.

Conditions for Clearing the DTC

DTC P1751 is a Type B DTC.

Diagnostic Aids

Before performing a road test, configure and setup the scan tool for snapshot mode. This will allow you to display, monitor, and verify multiple

transmission data parameters at one time, after the road test.

Reference Information

Description and Operation

Transmission General Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/6T70/6T75 -

Automatic Transmission/Transmission General Description)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)