
2003 GMC Sierra 2500 SLE 6.0L Poor Idle Quality, Misfire, MIL Lamp on
hello to all, i have cylinders 1,3 and 8 are missfiring. i have swapped fuel injectors and misfire did not move. when injectors where out inspected top of injectors and found no debri. blew out rail and nothing but fuel came out. swapped ignition coils. 1 and ...
FIX posted 5/6/2014
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Message Closed w/FIX
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VIN | 1GTHK23U63 |
Engine | 6.0 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection / sfi |
Emissions | OBD-II Compliant |
Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
Occurs | Hot, Idle, Warm but Not Cold |
Trouble Codes
P0300 | Multiple Misfire Detected |
Message Closed w/FIX
Vehicle Data
2003 GMC Sierra 2500 SLE
VIN | 1GTHK23U63 |
Engine | 6.0 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection / sfi |
Emissions | OBD-II Compliant |
Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
Occurs | Hot, Idle, Warm but Not Cold |
Trouble Codes
P0300 | Multiple Misfire Detected |