2003 GMC 2500hd 6.0l random misfire

By Dale Kohler
November 26, 2019 in Ask A GM Technician

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Dale Kohler

Posted November 26, 2019

My 6.0l has a random misfire p0300 I replaced crank sensor it won't take a relearn because it doesn't shut down. So I replaced fuel pump, fuel filter, injectors, fuel pressure regulator, plugs and wires, coil packs, and all the 02 sensors any help would be great thanks

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