2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2903

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2903

4. Ignition OFF, install a test lamp between the control circuit terminal D and the control circuit terminal A.

5. Ignition ON, command the fuel pump ON and OFF using a scan tool ECM fuel pump output control. The test lamp should turn ON and OFF

when changing between the commanded states.

瀚慖f the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the fuel pump control

module.

瀚慖f the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace

the fuel pump control module.

6. If all circuits test normal, perform the Fuel System Diagnosis (See: Powertrain Management/Computers and Control Systems/Testing and

Inspection/Component Tests and General Diagnostics/Fuel System Diagnosis) to verify proper fuel pressure.

Repair Instructions

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

* Fuel Tank Fuel Pump Module Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Service and Repair)

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

and programming

6L50/6L80/6L90 - Automatic Transmission

DTC P2714 or P2715

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 P2714

- Clutch Pressure Control (PC) Solenoid 4 - Stuck Off

DTC P2715

- Clutch Pressure Control (PC) Solenoid 4 - Stuck On

Circuit/System Description

The clutch pressure control (PC) solenoid 4 is part of the control solenoid valve assembly, which has no serviceable parts. The PC solenoid 4

regulates transmission fluid pressure to the 2-6 clutch regulator valve which controls pressure to the 2-6 clutch. The TCM calculates gear ratio

based on the RPM signals from the input speed sensor (ISS) and the output speed sensor (OSS). The TCM compares the expected transmission gear

ratio to the calculated gear ratio for each commanded gear.

Conditions for Running the DTC

P2714

* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.

* The transmission input shaft speed is greater than 60 RPM.

* 2-6 clutch is commanded ON.

P2715

* DTCs P0716, P0717, P0722, P0723, P1825, or P1915 are not set.

* The transmission output shaft speed is greater than 200 RPM.

* 2-6 clutch is commanded OFF.

Conditions for Setting the DTC

P2714

The TCM detects an incorrect on-coming clutch gear ratio, or flare, when the 2-6 clutch is commanded ON for 0.5 seconds and the transmission

input shaft speed is greater than 75 RPM from the anticipated input shaft speed.