Help! Po300 appears when raining in 2008 sierra

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04-12-2013 | 09:47 PM

SpeedyG.

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Help! Po300 appears when raining in 2008 sierra

Oki guys when ever itt rains my 08 sierra starts sputtering and shows po300 random cylinder misfire and my dash shows reduce engine power and stability trak on any1 knw wat could it be
Help is appreciate it

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04-12-2013 | 10:38 PM

cammed00

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From: Ft.Worth

Check the plug wires for any damage?

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