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1998 Chevrolet C3500 Cheyenne 7.4L Excessive Emissions
Posted to GM Driveability on 10/1/2004 7 Replies

okay here you go guys and gals. i have this truck. it came in for a state emissions test. this truck failed for excessive hc at idle. i have replaced both upstream o2 sensors. checked all 8 plugs. gap was god and plugs looked ok. ignition system looks ok. has ...

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  Related Documents & Media  1998 Chevrolet C3500 Cheyenne

 
Message Closed w/FIX

car Vehicle Data

1998 Chevrolet C3500 Cheyenne

VIN 1GBKC34J1W
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sfi
EmissionsOBD-II Compliant
SymptomsExcessive Emissions
OccursIdle
Misc.Flatbed 10,000 Gvrw
Message Closed w/FIX

car Vehicle Data

1998 Chevrolet C3500 Cheyenne

VIN 1GBKC34J1W
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sfi
EmissionsOBD-II Compliant
SymptomsExcessive Emissions
OccursIdle
Misc.Flatbed 10,000 Gvrw