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1989 Chevrolet C3500 Cheyenne 7.4L Excessive Emissions
Posted to GM Driveability on 3/12/2003 4 Replies

This vehicle failed California TSI emissions test for excessive HC. Tested EGR system and found functional, removed EGR valve and plugged passages checked for influence on HC with no change. Ignition timing on the mark and checked for slipped balancer also on ...

4 Replies Received (View Replies)

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car Vehicle Data

1989 Chevrolet C3500 Cheyenne

VIN 2GCHC39N2K
Engine7.4 L / 8 cyl / GAS
Trans3-speed Automatic
DeliveryFI / TBI
EmissionsCA Emissions
SymptomsExcessive Emissions
OccursCruise, Idle
Message Closed w/FIX

car Vehicle Data

1989 Chevrolet C3500 Cheyenne

VIN 2GCHC39N2K
Engine7.4 L / 8 cyl / GAS
Trans3-speed Automatic
DeliveryFI / TBI
EmissionsCA Emissions
SymptomsExcessive Emissions
OccursCruise, Idle