× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
2005 Chevrolet Trailblazer LT 4.2L Poor Idle Quality, Misfire, MIL Lamp on
Posted to GM Driveability on 2/2/2010 17 Replies

Hey all, gotta trailblazer givin' me fits. Came in with misfire code P0302. Replaced the ignition coil (#2) and all the spark plugs. The vehicle still has the misfire ONLY at idle, runs fantastic on the highway. Misfire counter does go up at idle and will stop...

17 Replies Received (View Replies)

  Related Documents & Media  2005 Chevrolet Trailblazer LT

 
Message Closed

car Vehicle Data

2005 Chevrolet Trailblazer LT

VIN 1GNET16S95
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursAlways, Idle

Trouble Codes

P0302Cylinder 2 Misfire Detected
Message Closed

car Vehicle Data

2005 Chevrolet Trailblazer LT

VIN 1GNET16S95
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursAlways, Idle

Trouble Codes

P0302Cylinder 2 Misfire Detected