Question about 1992 GMC Suburban
Check grounds. The computer can have signals going into it but with grounds the signals do not come out of it. There is a chance that you may have gotten a bad one. Check the O2 wiring harness' and make sure you don't have a burnt wire from it rubbing. I had a Chevy pickup in my shop once and found a bad ground at the rear coming off of the fuel pump harness keeping the truck from starting. At the computer, check the wiring harness for loose or frayed connectors as well.
Posted on Nov 02, 2008
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