P0300 Random Misfire

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19/11/2020 1:12 pm

Topic starter

Scotty,

I have a 2006 GMC Yukon XL w/250K miles. Have had a P0300 random

misfire for about 5 years. Tried everything I can think of, vacuum leaks, manifold

gasket leaks, air flow, fuel pressure, ignition items, most sensors etc. Please advise.

Ron

RMKingpin

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P0300 misfire gmc yukon

1 Answer

19/11/2020 1:26 pm

Charging system, battery cables?

Oneimich

(@oneimich)

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