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1998 GMC K3500 Sierra SL 5.7L Misfire, Poor Fuel Economy
Posted to GM Driveability on 7/20/2006 12 Replies

Hello, any help would be appricaded. the truck has 178k it shows missfire on three and five cylinders tune up has been done replaced two inj.3-5 replaced both cats went to the cam and crank sensor no help what bothers me the most is the map reading on scan too...

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  Related Documents & Media  1998 GMC K3500 Sierra SL

 
Message Closed w/FIX

car Vehicle Data

1998 GMC K3500 Sierra SL

VIN 1GTHK33R5W
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / port
EmissionsOBD-II Compliant
SymptomsMisfire, Poor Fuel Economy
OccursAlways
Message Closed w/FIX

car Vehicle Data

1998 GMC K3500 Sierra SL

VIN 1GTHK33R5W
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / port
EmissionsOBD-II Compliant
SymptomsMisfire, Poor Fuel Economy
OccursAlways