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2004 GMC Sierra 1500 SLE 4.8L Poor Idle Quality, Misfire, MIL Lamp on
misfire on 2 5 7 8 installed new plug and wires and intake gaskets now mis on 5 7 checked throttle and was at 14% should be at 5.5% changed throttle now 5.5% still mis on 2 7 need help
FIX posted 9/12/2013
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Related Documents & Media | VIN | 1GTEC14V64 |
| Engine | 4.8 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
| Occurs | Always, Idle |
Trouble Codes
| P0300 | Multiple Misfire Detected |
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Vehicle Data
2004 GMC Sierra 1500 SLE
| VIN | 1GTEC14V64 |
| Engine | 4.8 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
| Occurs | Always, Idle |
Trouble Codes
| P0300 | Multiple Misfire Detected |
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