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2007 Chevrolet Trailblazer SS Question: Misfire code on C7 only at sustained HWY Spds 60 mph? No adverse pwr fluctuation

 

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Joe Denny, New Orleans, LA, February 19, 2014, 09:29
 Rookie

This happens after driving 60 mph for 30 minutes or longer. There is no adverse power fluctuations.

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