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2010 GMC Yukon Denali Hybrid 6.0L Surge, Misfire VIN: 1GKUKGEJ3A
Coils are new have been tested,OEM spark plugs replaced and proper gap. plugs and wire harness have been checked. everything has been checked. misfire waas between 50-60 mph just yesterday misfire between 20-30 it is hybird. dont honestly know enough abo... Trouble codes: P0300 (RandomMultipe cylinder miusfire)
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