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2012 GMC Sierra 1500 SLE 5.3L Excessive Emissions, Poor Idle Quality, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on
Posted to GM Driveability on 6/1/2019 5 Replies

This truck came in w/multiple misfire on odd cylinders ONLY . Removed spark plugs to find odd plugs black from rich mixture on odd side only . Even bank is good . I could run a bunch of tests but it is doing this on one bank only . The plugs look just ...

5 Replies Received (View Replies)

  Related Documents & Media  2012 GMC Sierra 1500 SLE

 
Message Closed w/FIX

car Vehicle Data

2012 GMC Sierra 1500 SLE

VIN 3GTP2VE74C
Engine5.3 L / 8 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / fuel injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Surge, Cuts Out, Stall, Misfire, Poor Fuel Economy, MIL Lamp On
OccursAlways
Misc.Fed

Trouble Codes

P0175Fuel System Too Lean (Bank 2)
P0300Multiple Misfire Detected
P1171Fuel System Lean During Acceleration Detected
Message Closed w/FIX

car Vehicle Data

2012 GMC Sierra 1500 SLE

VIN 3GTP2VE74C
Engine5.3 L / 8 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / fuel injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Surge, Cuts Out, Stall, Misfire, Poor Fuel Economy, MIL Lamp On
OccursAlways
Misc.Fed

Trouble Codes

P0175Fuel System Too Lean (Bank 2)
P0300Multiple Misfire Detected
P1171Fuel System Lean During Acceleration Detected