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2001 GMC Sierra 3500 Question: multiple cylender misfire

 

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phillip94, 8.1L V8, Boone, NC, January 15, 2010, 15:47
 Rookie

have already reploaced plugs and wires

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  • Answer #1

    Bret Bodas from RepairPal Test Shop, January 15, 2010, 16:07
     Master

    Here is just about everything you need to understand and diagnose misfire codes: http://repairpal.com/OBD-Code-P0300

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