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2011 GMC Terrain SLE 2.4L High Fuel Trim
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...
FIX posted 6/4/2021
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12 Replies Received
12 Replies Received
Related Documents & Media | VIN | 2CTALMEC0B |
| Engine | 2.4 L / 4 cyl / GAS |
| Trans | 6-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | High Fuel Trim |
| Occurs | Idle |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
Message Closed
Vehicle Data
2011 GMC Terrain SLE
| VIN | 2CTALMEC0B |
| Engine | 2.4 L / 4 cyl / GAS |
| Trans | 6-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | High Fuel Trim |
| Occurs | Idle |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
Video