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2008 Chevrolet Trailblazer 4.2L Misfire
Posted to GM Driveability on 7/7/2011 18 Replies

Thanks to all who respond. Mostly when cold under accel It misfires and then backfires out the tailpipe. Misfire monitor shows everything ok, no codes, fuel pressure is good! Any advice would be great thanks!

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car Vehicle Data

2008 Chevrolet Trailblazer

VIN 1GNDT13S68
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursCold, Under Load
Message Closed

car Vehicle Data

2008 Chevrolet Trailblazer

VIN 1GNDT13S68
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursCold, Under Load