1999 Tahoe. Swap VCM Computer
#1
CF Junior Member
Thread Starter
1999 Tahoe. Swap VCM Computer
Hi. I'm having trouble with my AC coming on and I've about narrowed it down to the computer. Can I just swap the computer with one from a junkyard? I've already figured how to pull it out and re-install it. Thanks in advance. 5.7l
#2
what have you done to rule out the pcm?
The pcm will withhold a/c turn on request depending on certain input data to the pcm. Go in with a scan tool and view the a/c request parameter and make sure its not withheld or you will be replacing a good part. pcm's are replaced incorrectly more often then not.
The pcm will withhold a/c turn on request depending on certain input data to the pcm. Go in with a scan tool and view the a/c request parameter and make sure its not withheld or you will be replacing a good part. pcm's are replaced incorrectly more often then not.
#3
CF Junior Member
Thread Starter
what have you done to rule out the pcm?
The pcm will withhold a/c turn on request depending on certain input data to the pcm. Go in with a scan tool and view the a/c request parameter and make sure its not withheld or you will be replacing a good part. pcm's are replaced incorrectly more often then not.
The pcm will withhold a/c turn on request depending on certain input data to the pcm. Go in with a scan tool and view the a/c request parameter and make sure its not withheld or you will be replacing a good part. pcm's are replaced incorrectly more often then not.
#5
CF Junior Member
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