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1998 Chevrolet K1500 Cheyenne 5.0L Misfire, MIL Lamp on
Posted to GM Driveability on 5/4/2004 13 Replies

this is the boss' truck and when he tows a boat or camper on any kind of pull or locked in cruise it throws a missfire light. the only thing thats not new in this truck is the engine itself. if anyone has seen this any help is greatly apreciated.

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  Related Documents & Media  1998 Chevrolet K1500 Cheyenne

 
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car Vehicle Data

1998 Chevrolet K1500 Cheyenne

VIN 2GCEK19M8W
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / cpfi
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursUnder Load, Cruise

Trouble Codes

P0300Multiple Misfire Detected
Message Closed

car Vehicle Data

1998 Chevrolet K1500 Cheyenne

VIN 2GCEK19M8W
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / cpfi
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursUnder Load, Cruise

Trouble Codes

P0300Multiple Misfire Detected