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2002 Chevy Silverado PCM

Tiny
SSDQUAD409
  • MEMBER
  • 2002 CHEVROLET SILVERADO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 180,000 MILES
After eliminating everything else which could be keeping my new fuel pump from pumping, such as the fuel relay, fuel pump, all fuses, I checked the power coming from the #9 wire on the plug side of the RED plug and it had power, then with the RED and BLUE plugs back in, I checked the green/white wire coming out of the #9 position of the red plug and there was no power. Therefore, I believe the PCM is bad at that position since I also checked the #75 wire coming out of the blue plug which is the ignition and it was fine. My question is: Can this PCM be repaired or does it have to be replaced? I don't want to spend any more than necessary on this high mileage truck.
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Thursday, August 5th, 2010 AT 9:58 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
It sounds like you are right. As far as the PCM, they are non repairable. I wish I had better news, but it needs replaced. If you go to a salvage yard, make sure to get one with the exact same part number; otherwise, you will find that you have new and different problems.

Let me know if you have other questions.

Joe
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Thursday, August 5th, 2010 AT 10:42 PM

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