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2003 Chevrolet Suburban 1500 LS 5.3L Misfire, MIL Lamp on
Misfire under heavy throttle / engine load. This truck does a lot of towing (enclosed car trailer 6500lbs). If I am towing I will get a flashing check engine light on acceleration over about 3000rpm. Upon upshift or backing off on the throttle lamps goes out a...
FIX posted 11/19/2014
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Message Closed w/FIX
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32 Replies Received
32 Replies Received
Related Documents & Media | VIN | 3GNFK16Z23 |
| Engine | 5.3 L / 8 cyl / FLEX |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Misfire, MIL Lamp On |
| Occurs | Under Load, on Accel |
Trouble Codes
| P0300 | Multiple Misfire Detected |
Message Closed w/FIX
Vehicle Data
2003 Chevrolet Suburban 1500 LS
| VIN | 3GNFK16Z23 |
| Engine | 5.3 L / 8 cyl / FLEX |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Misfire, MIL Lamp On |
| Occurs | Under Load, on Accel |
Trouble Codes
| P0300 | Multiple Misfire Detected |
Video