Question about GMC Sierra 1500

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1996 GMC 1500 Pickup. Keep blowing 20A ECM-B fuse. Replaced Ign Mod,Coil,Cap/Rotor & pickup. Any Ideas Out There? Afraid to go any futher...dont want to ruin these new parts!

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  • Anonymous May 20, 2009

    having the same problem, im working on a 1998 chevrolet C2500 2wd, keeps blowing ecm-b fuse have not replaced any parts, wanting to know a good starting point, everything to my knowledge is factory an has not been messed with(connections, etc..).

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If you keep blowing a fuse there's a good chance it's not a faulty part but a short in the main harness most likely under the dash where all the connectors tend to get brittle over time and short out constantly. also check the ecm connection there is a 60 pin type.

Posted on May 19, 2009

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