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2004 GMC Sierra 1500 SLE 5.3L Poor Idle Quality, Misfire
Posted to GM Driveability on 3/31/2011 15 Replies

This truck has a rough idle and a consistent misfire on #6 and a inconsistent misfire showing on #5. New wires & plugs, swapped coils with other cylinder with no change. There are TSBs for bad ground on head, alarm system interference, intake gaskets, cracked ...

15 Replies Received (View Replies)

  Related Documents & Media  2004 GMC Sierra 1500 SLE

 
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car Vehicle Data

2004 GMC Sierra 1500 SLE

VIN 2GTEK19T04
Engine5.3 L / 8 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire
OccursAlways, Idle

Trouble Codes

P0300Multiple Misfire Detected
Message Closed

car Vehicle Data

2004 GMC Sierra 1500 SLE

VIN 2GTEK19T04
Engine5.3 L / 8 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire
OccursAlways, Idle

Trouble Codes

P0300Multiple Misfire Detected