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2011 GMC Terrain SLE 2.4L High Fuel Trim
Posted to GM Driveability on 4/22/2021 12 Replies

have replaced the upper catalyst a second time because they are after market and ive run into problems before. upper o2 is switching normally down stream at .7 to .8 at cruise up stream switches normally and down stream stuck at .15 at idle. smoke tested i...

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car Vehicle Data

2011 GMC Terrain SLE

VIN 2CTALMEC0B
Engine2.4 L / 4 cyl / GAS
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsHigh Fuel Trim
OccursIdle

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
Open Help Request

car Vehicle Data

2011 GMC Terrain SLE

VIN 2CTALMEC0B
Engine2.4 L / 4 cyl / GAS
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsHigh Fuel Trim
OccursIdle

Trouble Codes

P0171Fuel System Too Lean (Bank 1)