Question about 1996 Chevrolet K1500

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1996 chevy c1500

No power from pcm to fuel pump relay, replaced pcm with used but same problem

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  • JA6137 Nov 09, 2008

    I HAVE NO COMMUNICATION TO THE DIAGNOSTIC COMPUTER, NO ELECTRIC TO ECM, IGNITION, FUEL PUMP OR DASH LIGHTS

  • Anonymous Mar 28, 2014

    my pcm fuse blows when my fuel pump relay is in but when i take out the fuel relay the pcm does not blow

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Really need more info, but it could be a simple ground wire! Frankster016

Posted on Oct 19, 2008

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Probably too late, but I had same problem. Chances are the fuel pump is fine. If you put a jumper across the fuel pump relay you can eliminate that being the problem (you'll hear it start up). For me it was related (and still is) to a loose connection in the wire harness. That's what makes this one so hard to diagnose.

Posted on May 09, 2009

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I had the same thing! I had to replace 3 fuel pumps in 2 years. (Bought cheap-o from mexico!) Anyway I took the bed off to get to them every time well it appeared that 1 time I had pinched one of the wires leading to it and it then rubbed itself during normal driving and eventually shorted out. Look at the wiring. I think it cost me like 10 or 20 dollars to fix it. Good luck. Hope this helped.

Posted on Mar 21, 2009

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