× 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
2012 GMC Sierra 2500 HD SLE 6.0L Misfire, MIL Lamp on
Posted to GM Driveability on 6/16/2020 12 Replies

this truck has a misfire on #5 cylinder (third cylinder back on left side) that is mainly noticeable at idle, at least that's what I gather because I inherited this truck from another tech and I have not driven it but when you rev it the misfire seems to g...

12 Replies Received (View Replies)

  Related Documents & Media  2012 GMC Sierra 2500 HD SLE

 
Open Help Request

car Vehicle Data

2012 GMC Sierra 2500 HD SLE

VIN 1GT220CG9C
Engine6.0 L / 8 cyl / FLEX
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursIdle

Trouble Codes

P0300Multiple Misfire Detected
Open Help Request

car Vehicle Data

2012 GMC Sierra 2500 HD SLE

VIN 1GT220CG9C
Engine6.0 L / 8 cyl / FLEX
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursIdle

Trouble Codes

P0300Multiple Misfire Detected