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2012 GMC Sierra 2500 HD SLE 6.0L Poor Idle Quality, Hesitation, Surge, Misfire, Poor Fuel Economy, MIL Lamp on
This truck runs fine cold. No issues in open loop operation. After warm up with closed loop and extended idle, P0137 occurs and shortly after idle quality suffers. ST Fuel trims hit -20 to -24% and LT trims are pinned at -27%. Bank 1 sensor 1 sits around [...]...
FIX posted 2/23/2016
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Message Closed w/FIX
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11 Replies Received
11 Replies Received
Related Documents & Media | VIN | 1GT220CG6C |
| Engine | 6.0 L / 8 cyl / FLEX |
| Trans | 6-speed Automatic (Electronic) |
| Delivery | Fuel Injection / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Hesitation, Surge, Misfire, Poor Fuel Economy, MIL Lamp On |
| Occurs | Hot |
Trouble Codes
| P0137 | Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit Low Voltage |
| P0172 | Fuel System Too Rich (Bank 1) |
| P0300 | Multiple Misfire Detected |
Message Closed w/FIX
Vehicle Data
2012 GMC Sierra 2500 HD SLE
| VIN | 1GT220CG6C |
| Engine | 6.0 L / 8 cyl / FLEX |
| Trans | 6-speed Automatic (Electronic) |
| Delivery | Fuel Injection / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Hesitation, Surge, Misfire, Poor Fuel Economy, MIL Lamp On |
| Occurs | Hot |
Trouble Codes
| P0137 | Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit Low Voltage |
| P0172 | Fuel System Too Rich (Bank 1) |
| P0300 | Multiple Misfire Detected |
Video