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
Vehicle Data2001 GMC Yukon XL 1500 SLT
Trouble Codes
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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 |