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Re: Buick LaCrosse issues
Posted to Technical Discussion Forum on 2/12/2011 1 Reply

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The 3 cylinder multiple misfires are a good clue. I would check the common ground, G122 for coils #1,3, & 5 and G123 for coils #2, 4 & 6. Loose coil grounds have caused 3 cylinder misfires on this ve... Login to read more.

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