2003 GMC Yukon XL 1500 SLT 5.3L Misfire
misfire cyl 2 at idle only off idle no miss fuel pressure 48 psi flow good swapped injectors and coils with no help vacuum steady machine shop vacuum tested valves and cylinder said no problems fuel trims 4 while misfiring any other help would be great
FIX posted 12/10/2009
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Vehicle Data2003 GMC Yukon XL 1500 SLT
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2003 GMC Yukon XL 1500 SLT
VIN | 3GKFK16Z43 |
Engine | 5.3 L / 8 cyl / FLEX |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | Misfire |
Occurs | Idle |
Trouble Codes
P0300 | Multiple Misfire Detected |