Sierra, Silverado 2006-2007

6.0L V8 VIN U Std 4

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Trouble Code: P0641



5-Volt Reference 1 Circuit

Trouble Code: P0646



Air Conditioning (A/C) Clutch Relay Control Circuit Low Voltage

Trouble Code: P0647



Air Conditioning (A/C) Clutch Relay Control Circuit High Voltage

Trouble Code: P0650



Malfunction Indicator Lamp (MIL) Control Circuit

Trouble Code: P0651



5-Volt Reference 2 Circuit

Trouble Code: P0654



Engine Speed Output Circuit

Possible Causes:



Important: Remove any debris from the PCM connector surfaces before servicing the PCM. Inspect the PCM connector gaskets when diagnosing/replacing the PCM. Ensure that the gaskets are installed correctly. The gaskets prevent water intrusion into the PCM. Using Freeze Frame and/or Failure Records data may aid in locating an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame and/or Failure Records data can aid in determining how many miles since the DTC set. The Fail Counter and Pass Counter can also aid determining how many ignition cycles the diagnostic reported a pass and/or a fail. Operate the vehicle within the same freeze frame conditions (RPM, load, vehicle speed, temperature, etc.) that you observed. This will isolate when the DTC failed. For an intermittent, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0833



Clutch Pedal Switch 2 Circuit

Trouble Code: P0856



Traction Control Torque Request Circuit

Possible Causes:

C0298 A requested torque signal malfunction is only one possible cause for the PCM to lose the ability to perform traction control. DTC C0298 may set due to engine overheating, throttle actuator control failure, loss of ignition timing control by the PCM, etc. If DTC P0856 has not set, refer to the following in order to identify other possible causes of DTC C0298:



Symptoms - Engine Controls for the 4.3L engine
 
Symptoms - Engine Controls for the 8.1L engine
 
Symptoms - Engine Controls for the 4.8L, 5.3L, and 6.0L engines
 
Symptoms - Engine Controls for the 6.6L (LBZ and LLY) engine
 



Testing for Electrical Intermittents
 
Testing for Intermittent Conditions and Poor Connections
 
Connector Repairs
 
Wiring Repairs
 

Trouble Code: P0A01



Starter/Generator Control Module Coolant Temperature Sensor 1 Performance

Trouble Code: P0A02



Starter/Generator Control Module Coolant Temperature Sensor 1 Circuit Low Voltage

Trouble Code: P0A03



Starter/Generator Control Module Coolant Temperature Sensor 1 Circuit High Voltage

Trouble Code: P0A06



Battery Energy Control Module Read Only Memory (ROM)

Possible Causes:



If condition is not present, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0A07



Battery Energy Control Module 5-Volt Reference Circuit

Possible Causes:



If condition is not present, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0A0A



High Voltage System Interlock Circuit

Possible Causes:



Ensure that all connectors are connected properly.
 

Trouble Code: P0A1D



HCM System Fault

Trouble Code: P0A27



Hybrid Battery Pack Relay Feedback Circuit

Trouble Code: P0A3E



Starter/Generator Control Module Overtemperature

Possible Causes:



If there is a restriction of the air flow through the radiator this DTC may set. Ensure that the vehicle front end has at least 1.5 meters (5 feet) of clearance from obstructions to airflow if vehicle is parked.
 

Trouble Code: P0A7E



Hybrid Battery Pack Overtemperature

Trouble Code: P0A7F



Hybrid Battery Pack Life

Trouble Code: P0A82



Hybrid Battery Pack Cooling Fan Stuck OFF

Trouble Code: P0A83



Hybrid Battery Pack Cooling Fan Stuck ON

Trouble Code: P0A88



14-Volt Power Module Current Sensor Circuit Low Current

Trouble Code: P0A89



14-Volt Power Module Current Sensor Circuit High Current

Trouble Code: P0A8B



14-Volt Power Module System Voltage

Trouble Code: P0A8E



14-Volt Power Module System Voltage High

Trouble Code: P0A9C



Hybrid Battery 1 Temperature Sensor Performance

Trouble Code: P0A9D



Hybrid Battery 1 Temperature Sensor Circuit Low Voltage

Trouble Code: P0A9E



Hybrid Battery 1 Temperature Sensor Circuit High Voltage

Trouble Code: P0ABF



N/A

Trouble Code: P0AC0



N/A

Trouble Code: P0AC6



Hybrid Battery 2 Temperature Sensor Performance

Trouble Code: P0AC7



Hybrid Battery 2 Temperature Sensor Circuit Low Voltage

Trouble Code: P0AC8



Hybrid Battery 2 Temperature Sensor Circuit High Voltage

Trouble Code: P0ACB



Hybrid Battery 3 Temperature Sensor Performance

Trouble Code: P0ACC



Hybrid Battery 3 Temperature Sensor Circuit Low Voltage

Trouble Code: P0ACD



Hybrid Battery 3 Temperature Sensor Circuit High Voltage

Trouble Code: P1121



Throttle Position (TP) Sensor Circuit Intermittent High Voltage

Trouble Code: P1122



Throttle Position (TP) Sensor Circuit Intermittent Low Voltage

Trouble Code: P1125



Accelerator Pedal Position (APP) System

Trouble Code: P1133



HO2S Insufficient Switching Bank 1 Sensor 1

 
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