2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 2664
2. 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) to verify correct oil pressure.
3. 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) to verify control solenoid valve assembly condition.
4. 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) to verify control solenoid
valve assembly function.
5. Inspect the control valve upper 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.
Component Testing
* 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).
* 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).
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 body repair or replacement.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for Q8 control solenoid valve assembly
replacement, setup, and programming.
6L50/6L80/6L90 - Automatic Transmission
DTC P2719-P2721
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 P2719
- Clutch Pressure Control (PC) Solenoid 4 System Performance
DTC P2720
- Clutch Pressure Control (PC) Solenoid 4 Control Circuit Low Voltage
DTC P2721
- Clutch Pressure Control (PC) Solenoid 4 Control Circuit High Voltage
Diagnostic Fault Information
Typical Scan Tool Data
