2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2669

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2669

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

(DTC) Type Definitions)

Special Tools

DT-47825 Control Solenoid Test Plate

Component Testing

Circuit/System Verification

1. Verify that DTCs P0721, P0722, P0723, P0966, P0967, P0969, P0970, P0971, P0973, P0974, P0976, P0977, P2720, P2721, P2728, P2729,

or P2730 are not set.

瀚慖f any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

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

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

and Inspection/Symptom Related Diagnostic Procedures/2ML70 - Automatic Transmission/Transmission Fluid Level and Condition Check)

procedure.

3. Perform the Line Pressure Check (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component

Tests and General Diagnostics/2ML70 - Automatic Transmission/Line Pressure Check) procedure.

瀚慖f the pressure is out of specification, correct this concern first.

4. 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/2ML70 - Automatic Transmission/Control

Solenoid Valve and Transmission Control Module Assembly Inspection).

瀚慖f a concern is found, repair or replace the control solenoid valve assembly.

5. 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/2ML70 - Automatic

Transmission/Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test).

瀚慖f the solenoid is found to be leaking or stuck closed, replace the control solenoid valve assembly.

6. Inspect the control valve lower body assembly for sticking valves, damage, scored bores, or debris.

瀚慖f a concern is found in the valve body, repair or replace the valve body as necessary.

7. Inspect the hybrid direct, 2-3-4 clutch assembly for damage.

瀚慖f a concern is found in the hybrid direct, 2-3-4 clutch assembly, repair or replace as necessary.

Repair Instructions

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

* Control Solenoid Valve and Transmission Control Module Assembly Replacement (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Extension Housing/Service and Repair/Control Solenoid Valve and Transmission Control Module Assembly

Replacement) for control valve assembly removal.

* Control Valve Assembly Disassemble (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Service and

Repair/Overhaul/2ML70 - Automatic Transmission/54. Control Valve Assembly Disassemble) for control valve assembly inspection and

overhaul.

* Hybrid Direct, 2-3-4 Clutch Housing Overhaul (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Service and

Repair/Overhaul/2ML70 - Automatic Transmission/29. Hybrid Direct, 2-3-4 Clutch Housing Overhaul) for hybrid direct, 2-3-4 clutch

assembly replacement.

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

setup, and programming.