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2001 GMC Yukon XL 1500 SLT 5.3L Misfire
vehicle came in originally with P0300, P0171, P0174, found open plug wires and 5lbs of backpressure in exhaust, replaced above componenets ran great, now has P0300, only misfires on cold start until you reach about 130 degrees misfire goes away, pressure dropp...
FIX posted 1/5/2007
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Message Closed w/FIX
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13 Replies Received
13 Replies Received
Related Documents & Media | VIN | 3GKFK16T81 |
| Engine | 5.3 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | Misfire |
| Occurs | Cold |
Trouble Codes
| P0300 | Multiple Misfire Detected |
Message Closed w/FIX
Vehicle Data
2001 GMC Yukon XL 1500 SLT
| VIN | 3GKFK16T81 |
| Engine | 5.3 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | Misfire |
| Occurs | Cold |
Trouble Codes
| P0300 | Multiple Misfire Detected |
Video