2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1857

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1857

* Fuel System Cleaning (See: Powertrain Management/Fuel Delivery and Air Induction/Service and Repair)

* Fuel Tank Draining (Single Tank) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Tank/Service and

Repair/Procedures/Fuel Tank Draining (Single Tank))Fuel Tank Draining (Dual Tanks - Rear) (See: Powertrain Management/Fuel Delivery

and Air Induction/Fuel Tank/Service and Repair/Procedures/Fuel Tank Draining (Dual Tanks - Rear))Fuel Tank Draining (Dual Tanks -

Front) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Tank/Service and Repair/Procedures/Fuel Tank Draining (Dual

Tanks - Front))

* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (1500 Series) (See: Powertrain Management/Computers and Control

Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (2500 Series) (See: Powertrain

Management/Computers and Control Systems/Oxygen Sensor/Service and Repair) and Heated Oxygen Sensor Replacement - Bank 2 Sensor

1 (1500 Series) (See: Powertrain Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor

Replacement - Bank 2 Sensor 1 (2500 Series) (See: Powertrain Management/Computers and Control Systems/Oxygen Sensor/Service and

Repair)

* Manifold Absolute Pressure Sensor Replacement (See: Powertrain Management/Computers and Control Systems/Manifold

Pressure/Vacuum Sensor/Service and Repair)

* Mass Airflow Sensor with Intake Air Temperature Sensor Replacement (See: Powertrain Management/Computers and Control Systems/Air

Flow Meter/Sensor/Service and Repair)

* Throttle Body Assembly Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Throttle Body/Service and

Repair/Removal and Replacement)

Repair Verification

Important:

* After repairs, use the scan tool Fuel Trim Reset function in order to reset the Long Term Fuel Trim.

* To verify the performance of the catalytic converter has not been affected by the condition that set this DTC, perform the Repair

Verification for DTC P0420 or P0430. Refer to DTC P0420 or P0430 (See: P Code Charts/P0420).

1. Install any components or connectors that have been removed or replaced during diagnosis.

2. Perform any adjustment, programming, or setup procedures that are required when a component or module is removed or replaced.

3. Turn ON the ignition, with the engine OFF.

Important: DO NOT clear codes with the engine running. The codes may reset in the same ignition cycle.

4. Clear the DTCs.

5. Turn OFF the ignition for 60 s.

6. Start the engine.

7. Duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in order to verify the DTC does not

reset. If the DTC resets, or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble

Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) and perform the appropriate diagnostic procedure.

P179B

DTC P179B

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 P179B

- Range State Command Circuit

Circuit/System Description

This is an internal fault detection of the transmission control module. This fault is handled inside the transmission control module and no external

circuits are involved. The transmission control module is part of the control solenoid valve assembly, and is not serviced separately.

Conditions for Running the DTC

* The engine is running.

* Ignition voltage is 8-18 V.

Conditions for Setting the DTC