2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2921

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2921

P2720

The TCM detects a short to ground on the clutch PC solenoid 4 control circuit for 1 second.

P2721

The TCM detects an open or short to voltage on the clutch PC solenoid 4 control circuit for 1 second.

Action Taken When the DTC Sets

P2719

* DTC P2719 is a Type C DTC.

* The TCM freezes transmission adaptive functions.

P2720

* DTC P2720 is a Type A DTC.

* The TCM defaults the transmission to a limited shift pattern utilizing 2nd gear and reverse gear.

* The TCM forces TCC OFF.

* The TCM freezes transmission adaptive functions.

* The TCM commands maximum line pressure.

* The TCM enables Torque management.

* The TCM inhibits TAP Up/Down function.

* The TCM inhibits manual shifting of forward gears.

P2721

* DTC P2721 is a Type A DTC.

* The TCM defaults the transmission to a limited shift pattern utilizing 3rd gear and reverse gear.

* The TCM forces TCC OFF.

* The TCM freezes transmission adaptive functions.

* The TCM commands maximum line pressure.

* The TCM enables Torque management.

* The TCM inhibits TAP Up/Down function.

* The TCM inhibits manual shifting of forward gears.

Conditions for Clearing the DTC

* DTC P2719 is a Type C DTC.

* DTCs P2720 and P2721 are Type A DTCs.

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)

* Inline Harness Connector End Views (See: Power and Ground Distribution/Multiple Junction Connector/Diagrams)

Description and Operation

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

Operation/6L45/6L50/6L80/6L90 - Automatic Transmission/Transmission General Description)

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

Operation/6L45/6L50/6L80/6L90 - Automatic Transmission/Transmission Component and System Description)

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

Operation/6L45/6L50/6L80/6L90 - Automatic Transmission/Electronic Component 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)