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2001 GMC Sierra 2500 HD SL 6.0L Poor Idle Quality, Misfire, MIL Lamp on
Posted to GM Driveability on 6/19/2009 11 Replies

this vehicle is missfiring on acceleration (check engine light flashing) and setting code p0300. monitoring missfire monitors cylinders 1/6 are missfing. just performed an all a/c delco tune up (ig, plugs wires, 2 coils, fuel filter and air filter) for the 1st...

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  Related Documents & Media  2001 GMC Sierra 2500 HD SL

 
Message Closed w/Summary

car Vehicle Data

2001 GMC Sierra 2500 HD SL

VIN 1GTHC24UX1
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursOn Accel, Cruise

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/Summary

car Vehicle Data

2001 GMC Sierra 2500 HD SL

VIN 1GTHC24UX1
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursOn Accel, Cruise

Trouble Codes

P0300Multiple Misfire Detected