1994 GMC Jimmy OBD

1994 GMC JIMMY
165,000 MILES • 4.3L • V6 • 4WD • AUTOMATIC
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TJOHNSON801
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  • 1 POST
My check engine light is on but when i try to scan the code the OBD does not have power. I have checked all the fuses I can find but none are blown. most posts say it is on the cigarette lighter fuse but it is good, and they work.
Jul 18, 2014 at 6:05 PM
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HMAC300
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  • 48,601 POSTS
have a pro check it may be a bad connection or broken wire.besides A & B are the ones to be crossed on OBD1 systems.
Jul 19, 2014 at 5:05 AM