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Hummer H1The original Hummer, which brought the Hummer look to the public eye during Desert Storm, with the addition of some features that make the H1 more of a street vehicle and less of a Army truck
Ok I’m lost. 1997 H1 IP was recently replaced. Ok at first. Now hard starting Code p0251( inj. Pump cam signal) sets current as soon as it starts. No air bubbles in fuel return. Doesn’t seem like TDC learn is working. Followed factory trouble tree leads to replace PCM. I’m uncertain if I may have missed something also can’t locate a PCM. Would a PCM from a 6.5 turbo diesel Chevy work?
Sorry I'm not any help but I cant help but ask what software scan set up is that is? that seems like it could be handy for any of us trying to keep these bad boys alive! please share??
PCM? Help!!!
