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1996 GMC C3500 Sierra SL 7.4L Misfire
Posted to GM Driveability on 2/12/2018 16 Replies

Hi, Started working on this truck with a complaint of "smelly exhaust" and check engine lamp on. Scan test showed P0300 and P0305 logged in freeze frame data. Freeze frame showed misfire was a cruise, 61 mph @ 2300 rpm. Misfire counter goes into the thou...

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  Related Documents & Media  1996 GMC C3500 Sierra SL

 
Message Closed

car Vehicle Data

1996 GMC C3500 Sierra SL

VIN 1GDJC34J9T
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / sefi
EmissionsOBD-II Compliant
SymptomsMisfire
OccursAlways, @2300 RPM

Trouble Codes

P0300Multiple Misfire Detected
P0305Cylinder 5 Misfire Detected
Message Closed

car Vehicle Data

1996 GMC C3500 Sierra SL

VIN 1GDJC34J9T
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / sefi
EmissionsOBD-II Compliant
SymptomsMisfire
OccursAlways, @2300 RPM

Trouble Codes

P0300Multiple Misfire Detected
P0305Cylinder 5 Misfire Detected