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2003 GMC Envoy SLT 4.2L MIL Lamp on
this envoy is entering reduced engine power mode when the mil comes on with codes p1221 p1271 and p1481. the code can be cleared and normal engine operation will resume for up to a couple of days. vehicle will also intermtitently cruise at 40mph. without accel...
FIX posted 7/7/2009
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Message Closed w/FIX
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Related Documents & Media | VIN | 1GKDT13S73 |
| Engine | 4.2 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P1221 | TP Sensor 2 1-2 Correlation |
| P1271 | Accelerator Pedal Position Sensor 1-2 Correlation |
| P1481 | EATX RPM Pulse Performance Malfunction |
Message Closed w/FIX
Vehicle Data
2003 GMC Envoy SLT
| VIN | 1GKDT13S73 |
| Engine | 4.2 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P1221 | TP Sensor 2 1-2 Correlation |
| P1271 | Accelerator Pedal Position Sensor 1-2 Correlation |
| P1481 | EATX RPM Pulse Performance Malfunction |
Video