Sierra, Silverado 2006-2007

4.8L V8 VIN V Auto 5

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Trouble Code: P0607



Control Module Performance

Trouble Code: P0608



Vehicle 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: P0609



Vehicle Speed Output Circuit 2

Possible Causes:

Thoroughly inspect connections or circuitry that may cause an intermittent malfunction. Refer to the following:



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

Trouble Code: P060B



Control Module Analog to Digital Performance

Trouble Code: P0613



Transmission Control Module (TCM) Processor

Trouble Code: P061C



Control Module Engine Speed Performance

Trouble Code: P062C



Control Module Vehicle Speed Performance

Trouble Code: P062F



Control Module Long Term Memory Performance

Trouble Code: P0634



Transmission Control Module (TCM) Internal Temperature Too High

Possible Causes:



Clean the TCM if necessary. Excessive road debris will reduce the effectiveness of the heat sink on the TCM and could cause the internal temperature to rise.
 

Trouble Code: P0641



5-Volt Reference 1 Circuit

Trouble Code: P0642



5-Volt Reference 1 Circuit Low Voltage

Trouble Code: P0643



5-Volt Reference 1 Circuit High Voltage

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: P064C



Glow Plug Module Control Performance

Trouble Code: P0650



Malfunction Indicator Lamp (MIL) Control Circuit

Trouble Code: P0651



5-Volt Reference 2 Circuit

Trouble Code: P0652



5 Volt Reference 2 Circuit Low Voltage

Trouble Code: P0653



5 Volt Reference 2 Circuit High Voltage

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: P0658



Actuator Supply Voltage 1 Low

Possible Causes:

Inspect the wiring for poor electrical connections at the TCM. Inspect for the following conditions:



A bent terminal
 
A backed-out terminal
 
A damaged terminal
 
Poor terminal tension
 
A chafed wire
 
A broken wire inside the insulation
 
When diagnosing for an intermittent short or open, massage the wiring harness while watching the test equipment for a change.
 
You may have to drive the vehicle in order to experience a condition.
 

Trouble Code: P0659



Actuator Supply Voltage 1 High

Possible Causes:

Inspect the wiring for poor electrical connections at the TCM. Inspect for the following conditions:



A bent terminal
 
A backed-out terminal
 
A damaged terminal
 
Poor terminal tension
 
A chafed wire
 
A broken wire inside the insulation
 
When diagnosing for an intermittent short or open, massage the wiring harness while watching the test equipment for a change.
 
You may have to drive the vehicle in order to experience a condition.
 

Trouble Code: P0667



Transmission Control Module (TCM) Temperature Sensor Performance

Possible Causes:



Reprogram the TCM and retest the DTC to see if the DTC resets. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection before replacing the control solenoid (w/body and TCM) valve assembly.
 

Trouble Code: P0668



Transmission Control Module (TCM) Temperature Sensor Circuit Low Voltage

Possible Causes:



Reprogram the TCM and retest the DTC to see if the DTC resets. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection before replacing the control solenoid (w/body and TCM) valve assembly.
 

Trouble Code: P0669



Transmission Control Module (TCM) Temperature Sensor Circuit High Voltage

Possible Causes:



Reprogram the TCM and retest the DTC to see if the DTC resets. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection before replacing the control solenoid (w/body and TCM) valve assembly.
 

Trouble Code: P0671



Cylinder #1 Glow Plug Control Circuit

Possible Causes:



If the battery is connected with the ignition ON, the glow plugs could be damaged without finding any circuit fault.
 

Trouble Code: P0672



Cylinder #2 Glow Plug Control Circuit

Possible Causes:



If the battery is connected with the ignition ON, the glow plugs could be damaged without finding any circuit fault.
 

Trouble Code: P0673



Cylinder #3 Glow Plug Control Circuit

Possible Causes:



If the battery is connected with the ignition ON, the glow plugs could be damaged without finding any circuit fault.
 

Trouble Code: P0674



Cylinder #4 Glow Plug Control Circuit

Possible Causes:



If the battery is connected with the ignition ON, the glow plugs could be damaged without finding any circuit fault.
 

Trouble Code: P0675



Cylinder #5 Glow Plug Control Circuit

Possible Causes:



If the battery is connected with the ignition ON, the glow plugs could be damaged without finding any circuit fault.
 

Trouble Code: P0676



Cylinder #6 Glow Plug Control Circuit

Possible Causes:



If the battery is connected with the ignition ON, the glow plugs could be damaged without finding any circuit fault.
 

Trouble Code: P0677



Cylinder #7 Glow Plug Control Circuit

Possible Causes:



If the battery is connected with the ignition ON, the glow plugs could be damaged without finding any circuit fault.
 

Trouble Code: P0678



Cylinder #8 Glow Plug Control Circuit

Possible Causes:



If the battery is connected with the ignition ON, the glow plugs could be damaged without finding any circuit fault.
 

Trouble Code: P0698



5-Volt Reference 3 Circuit Low Voltage

Trouble Code: P0699



5-Volt Reference 3 Circuit High Voltage

Trouble Code: P0700



Transmission Control Module (TCM) Requested MIL Illumination

Trouble Code: P0701



Transmission Control System Performance

Possible Causes:



Inspect the wiring for poor electrical connections at the TCM. Inspect for the following conditions:

A bent terminal
 
A backed-out terminal
 
A damaged terminal
 
Poor terminal tension
 
A chafed wire
 
A broken wire inside the insulation
 

When diagnosing for an intermittent short or open, massage the wiring harness while watching the test equipment for a change.You may have to drive the vehicle in order to experience a condition.DTC P0701 may be logged if a forward or REVERSE range is selected immediately after the engine is started, and before the TCM detects pressure at the switches, 2-6 seconds after the engine starts.A plugged control main filter may cause DTC P0701 to set.
 

Trouble Code: P0703



Brake Switch Circuit

Possible Causes:

DTC P0703 indicates that the TCM did not see the proper input signal for service brake status during an acceleration or deceleration cycle. This may indicate an open or short in the TCC brake switch/cruise control release circuit or a faulty stop lamp switch.



Inspect the wiring for poor electrical connections at the TCM. Inspect for the following conditions:

A bent terminal
 
A backed-out terminal
 
A damaged terminal
 
Poor terminal tension
 
A chafed wire
 
A broken wire inside the insulation
 

When diagnosing for an intermittent short or open, massage the wiring harness while watching the test equipment for a change.You may have to drive the vehicle in order to experience a condition.
 

Trouble Code: P0706



Transmission Range (TR) Switch Performance

Trouble Code: P0708



Transmission Range (TR) Sensor Circuit High

Possible Causes:

Important: Due to the TCM logic used to detect and set DTC P0708, this code can remain active even after an IMS switch replacement is complete and the ignition has been cycled. Therefore, always clear all active DTCs from the TCM after servicing the IMS switch.



Inspect the wiring for poor electrical connections at the TCM and powertrain control module (PCM). Inspect for the following conditions:

A bent terminal
 
A backed-out terminal
 
A damaged terminal
 
Poor terminal tension
 
A chafed wire
 
A broken wire inside the insulation
 

When diagnosing for an intermittent short or open, massage the wiring harness while watching the test equipment for a change.You may have to drive the vehicle in order to experience a condition.Due to this failure and associated response, DTC P0722 can also set.When monitoring "TR SW" while moving the selector through ranges, A/B/C/P states may indicate transitional states. Transitional states are the area between ranges.TR SW A/B/C/P may indicate invalid states when selecting ranges. Invalid states confirm a concern is present.
 

 
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