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2004 GMC Sierra 2500 HD SLE 8.1L Misfire, MIL Lamp on
Posted to GM Driveability on 6/28/2007 5 Replies

THIS TRUCK HAS MIFIRES ON 2@7 moved 7 coil to8 still misfired on 7 tested coil with cop tester seems to not spark as much on 2@ 7 as the rest of the coils flash great again the miss did not follow the coil please help as i don't have much info on this system

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  Related Documents & Media  2004 GMC Sierra 2500 HD SLE

 
Message Closed w/FIX

car Vehicle Data

2004 GMC Sierra 2500 HD SLE

VIN 1GTHK29GX4
Engine8.1 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursAlways
Message Closed w/FIX

car Vehicle Data

2004 GMC Sierra 2500 HD SLE

VIN 1GTHK29GX4
Engine8.1 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursAlways