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International Automotive Technicians Network
1996 GMC G3500 Vandura 5.7L Misfire
Posted to GM Driveability on 1/19/2010 23 Replies

This vehicle exhibits an excessive misfire under light throttle or cruising between 20-30 MPH. With doghouse off you can see the engine running very rough and there are pops/backfires from exhaust.

Giving a little extra throttle on accel and the engine smooth...

23 Replies Received (View Replies)

  Related Documents & Media  1996 GMC G3500 Vandura

 
Message Closed w/Summary

car Vehicle Data

1996 GMC G3500 Vandura

VIN 1GTGG35K6T
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsNot OBD-II Compliant
SymptomsMisfire
OccursCruise
Misc.Prom Id 5005

Trouble Codes

43ESC Knock Control
Message Closed w/Summary

car Vehicle Data

1996 GMC G3500 Vandura

VIN 1GTGG35K6T
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsNot OBD-II Compliant
SymptomsMisfire
OccursCruise
Misc.Prom Id 5005

Trouble Codes

43ESC Knock Control