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2002 GMC Sierra 1500 SL 4.3L Misfire, Poor Fuel Economy, MIL Lamp on
Thank you for taking the time to read this post. This truck started to have MIL on about a week ago, suddenly. Once MIL is displayed the shift points change and the fuel mileage drops dramatically. I did a complete tuneup last week. Cleaned injection system an...
FIX posted 10/15/2008
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Message Closed w/FIX
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11 Replies Received
11 Replies Received
Related Documents & Media | VIN | 1GTEC14WX2 |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SFI(Spider) |
| Emissions | OBD-II Compliant |
| Symptoms | Misfire, Poor Fuel Economy, MIL Lamp On |
| Occurs | Hot, Under Load, Cruise |
Trouble Codes
| P0101 | Mass Airflow Sensor Range/Performance |
| P0300 | Multiple Misfire Detected |
Message Closed w/FIX
Vehicle Data
2002 GMC Sierra 1500 SL
| VIN | 1GTEC14WX2 |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SFI(Spider) |
| Emissions | OBD-II Compliant |
| Symptoms | Misfire, Poor Fuel Economy, MIL Lamp On |
| Occurs | Hot, Under Load, Cruise |
Trouble Codes
| P0101 | Mass Airflow Sensor Range/Performance |
| P0300 | Multiple Misfire Detected |
Video