K 2500 Truck 4WD V8-379 6.2L DSL VIN C FI (1989)
Idle Speed: Adjustments
Curb Idle Speed
Idle Speed Adjustment Location
1. Set the parking brake and block the drive wheels
2. Engine must be at normal operating temperature with the air cleaner on and all accessories turned off
3. Install J 26925 Tachometer or equivalent
4. Adjust the low idle speed screw on the fuel injection pump to obtain the curb idle speed shown on the Emission Control Information label
