2005 GMC CanyonDiag Code-P0601 INT Cont Module memory check sumEngine 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????????
Year: 2005Make : GMCModel: Z71 Canyon SLEEngine: 3.5
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
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.
18+yrs experience. State Inspector & GM Diagnostics/Repair