Question about 2004 GMC Envoy

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Veh wont start

2004 gmc envoy turns over but wont start checked fuses power train control module 1 fuse blows as soon as i turn key to on

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  • Anonymous Mar 13, 2014

    the engine signals when I turn the key but just wont start to a run.

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By looking at the wiring diagram for your truck. the pcm1 fuse only feeds the pcm so most likely it is a grounded wire between the fuse block and pcm. follow the wire harness closely between the two and see if its grounded somewhere. also try disconnecting the pcm and see if the fuse still blows. that would isolate the problem to the wiring. it is highly unlikely that the pcm would cause the problem.

Posted on Nov 27, 2008

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Check it out and let me know.

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