C 3500 Truck 2WD V8-454 7.4L VIN J SFI (1999)
Idle Air Control Motor (IAC): Service and Repair
REMOVAL PROCEDURE
1. Disconnect the electrical connector from the IAC valve.
2. Remove the IAC valve attaching screws.
NOTE: If the IAC valve has been in service: DO NOT push or pull on the IAC valve pintle. The force required to move the pintle may damage the
threads on the worm drive. Also, DO NOT soak the IAC valve in any liquid cleaner or solvent, as damage may result.
3. Remove the IAC valve assembly.
4. Remove the O-ring.
