× 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
2004 GMC Sierra 1500 SLE 4.8L Misfire
Posted to GM Driveability on 12/22/2011 22 Replies

Car came in with random misfire code, misfires on 6 mostly and some on 5 but they are right next to each other in firing order so I have dismissed #5 misfires. Unplugging coil to 5 does drop RPM, unplugging #6 does not. I have performed cylinder balance test w...

22 Replies Received (View Replies)

  Related Documents & Media  2004 GMC Sierra 1500 SLE

 
Message Closed w/Summary

car Vehicle Data

2004 GMC Sierra 1500 SLE

VIN 2GTEK19V74
Engine4.8 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/Summary

car Vehicle Data

2004 GMC Sierra 1500 SLE

VIN 2GTEK19V74
Engine4.8 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected