C 3500 Truck 2WD V8-454 7.4L VIN J SFI (1999)
3. Install the attaching screws.
Tighten
Tighten the IAC valve attaching screws to 3.0 N.m (26 lb in).
4. Connect the electrical connector.
5. Reset the IAC valve pintle position.
5.1. Turn the ignition switch to the ON position for 5 seconds.
5.2. Turn the ignition switch to the OFF position for 10 seconds.
5.3. Start the engine.
5.4. Check for the proper idle operation.