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I am working on a 2002 chevy silverado 1500 5.3, i have a
Second opinion] i am working on a 2002 chevy silverado 1500 5.3, i have a constant random missfire code. i have changed plugs,coils,fuel pump and regulator [ new and old pump shows 50lbs], injectors c… read more
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I have a GMC Sierra 5.3L z71. I am getting code P0307.
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