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2005 GMC: P0601 INT Cont Module memory check sumEngine..Reduced Power

 
Ron Z.'s Avatar
  • Answered by:Ron Z.
  • - GMC Tech -
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Customer Question

2005 GMC Canyon
Diag Code-P0601 INT Cont Module memory check sum
Engine shuts down and "Reduced Power" displayed in dash. After about a minuit the engine will start again and proccess continues??? Is this a definate ECM????????

 

Optional Information:
Year: 2005
Make : GMC
Model: Z71 Canyon SLE
Engine: 3.5

Already Tried:
Had also P0140-heated oxygen sensor cercuit malfunction(bank 1 sensor 2). Replaced the Downstream HO2 sensor aft of the cadalidick converter and the message is still erroneous. Now I am just getting the P-0601 with engine shutting down

Submitted: 1297 days and 12 hours ago.
Category: GM
Value: $28
Status: CLOSED

Accepted Answer

Picture
Expert:  Ron Z. replied1297 days and 12 hours ago.

Unfortunately, this is the p-code for an internal PCM failure.

 

DTC P0601

DESCRIPTION
This diagnostic code applies to internal microprocessor integrity conditions within the powertrain control module (PCM).

 

The only repair for the dreaded P0601 is a PCM replacement.

Expert Type- GMC Tech -
Category: GM
Pos. Feedback: 97.9 %
Accepts: 397
Answered: 11/30/2009

Experience: 18+yrs experience. State Inspector & GM Diagnostics/Repair

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