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GMC Jimmy Electrical System

102 messages,  Last post on Nov 24, 2009 at 6:06 AM

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#98 of 102 1997 Jimmy wiring diagram source by mrtbob Sep 19, 2009 (12:34 pm)
I have a 1997 GMC Jimmy 2WD 4.3L engine that I need a wiring diagram for. I bought a Haynes repair manual , but it doesn't seem to come close to covering my vehicles wiring. My jimmy had a fire under it at some point in its past and melted a large switch assy on the side of my tranny. It seems to select lights (reverse etc) among other things, but its all kind of a mess now. Where can a guy obtain this info. Thanks.
#99 of 102 '00 jimmy - Something's draining the battery by edortizr6 Oct 27, 2009 (10:21 am)
I think something is draining the battery. I replaced the battery and the alternator but that didn't help. I checked the fuses and they all look ok. I was thinking maybe it's the positive cable on the battery, but I'm not sure. I'm not familiar with the electrical system. I just tried to start the truck and there was power. As soon as I turned the key everything went dead. I'm going to get this battery charged again and take it from there. If anyone has any ideas, I'ld love to here it. Thanks in advance.
#100 of 102 michael79 by michael79 Oct 27, 2009 (11:05 am)
you have a bad connection somewhere, you can check the positive post to make sure it is not broken, that happened to me once, or your possitive cable is corroded somewhere down the line.
#102 of 102 2001 GMC Jimmy - No electrical power anywhere by chris_kreiner Nov 24, 2009 (6:06 am)
My brother was driving his Jimmy the other night when without warning he lost all electrical. He didn't even have a slighty flicker of power once it died. I asked him if he smelt anything hot like there was a short somewhere and he said NO. I checked his battery and it had more then enough power to turn on dome lights yet they wouldn't work. Everything is dead. We don't know what the problem can be, we looked at the ignition switch and I don't see anything wrong with it but not quite sure how to test it. What would cause this vehical to just loose electrical power without any warning?

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