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1991 Gmc K1500 Blows Ecm Fuse
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Question
dbrianson
I have a 1991 Gmc sierra k1500 that constantly blows the ecm fuse sometimes as soon as i turn on the key, i pulled the fuel pump relay and its still blows. I changed the ecm module and it still blows, unhooked the oil pressure switch and it still blows. If i let it sit for awhile and plug in a new fuse it will crank and run for a long time, but if i start down the road it blows the fuse and dies, sometimes quickly and sometimes i can drive a few miles. i have looked over obvious wire and dont see anything but im about to set this thing on fire.
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