We need help and don't know how to proceed. 2005 Chevy Colorado Vortec 3500 3.5L five-cylinder Crew Cab Z71. It is a great truck with low mileage. My wife was driving and lost power. Diagnosed by Chevy a bad ECM.

Chevy says they cannot find a replacement, I guess in their system. Says cannot use salvage yard.

I Ordered one from fs1incdotcom programmed with our VIN, but I was not able to get it to work. Key cycling procedure was never recognized. Put my original ECM back in and at least it started. The Dealer said it was not trustworthy to drive, that the problem would get worse.

Chevy dealer says it could order one from a site like that above, but would not guarantee the work. So if it did not work we are out of luck. The part is guaranteed but we cannot just throw away service charges if it does not work.

Fixed income and it is our only vehicle.

Suggestions or part sources would be greatly appreciated.

Sorry for the long post.

 

• If you are experiencing any of these problems, chances are you need a new PCM:
  
• The engine cranks but does not start
• Stalling issue when shifting gears or starting the car
• Intermittent misfires
• Peculiar smell and increased emissions
• Ignitions coil not receiving enough spark
• Diagnostic trouble codes P1792 (ECM to TCM engine coolant signal), P06010 (internal control modules memory checksum error), P0606 (ECM processor fault), P1890 (ECM data input circuit) and P1690 (ECM loop overrun), among others.