Question about 1995 GMC Jimmy
Have you checked the fuses for the cigarette lighter or accessory port fuses? These are the ones that usually power up obd II devices and allow communication between the scanner and pcm. EGR on the 4.3 are a very common problem for catbon build up and if it is stuck open will cause rough idle. Check those fuses and let me know if scanner will communicate.
Posted on Aug 29, 2010
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Posted on Jan 02, 2017
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