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1991 Chevrolet K1500 Cheyenne 5.7L Misfire
Posted to GM Driveability on 1/12/1999

This vehicle runs fine with the timing connector unhooked and the vehicle in base timing. When I hook up the timing connector the P.U. will not run, it backfires out the tbi and tailpipe. I have tried a New ignition module and ECM. Plug wires routed correc...

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car Vehicle Data

1991 Chevrolet K1500 Cheyenne

VIN 2GCEK19K6M
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
Emissionsus fed emissions
SymptomsMisfire
OccursAlways
Message Closed w/FIX

car Vehicle Data

1991 Chevrolet K1500 Cheyenne

VIN 2GCEK19K6M
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
Emissionsus fed emissions
SymptomsMisfire
OccursAlways