Aug 17th, 16, 05:40 AM
Join Date: Mar 2009
Location: Lyman, SC
Re: Body control module replacement
Being remanufactured, I don't know if they are like a new BCM which just learns the key resistance the very first time a key is inserted. It may have the old value still in it, and I've never tried the 30 minute relearn procedure that I figure you're looking at.
Without getting into whether or not the replacement BCM is just bad or other things, you can try getting a $5 10k potentiometer from Radio Shack and connecting it to the plug under the column for the key resistor reader. Then use your meter to set it to each of the fifteen values GM used for the keys and try until one of them hits. Once you know which one it's set to you can just make a bypass module using a few dollars worth of resistors or buy a plug-in module for $20-$30 and not have to worry about it again.
Dart 400-AFR 195-224/224 HR-Powerjection III TB with F.A.S.T. Sportsman XFI
TKO 600-Moser 3.42-Detroit Truetrac
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