C 1500 Truck 2WD V8-5.3L VIN T (1999)
1. Measure the distance between the tip of the IAC valve pintle and the mounting surface (1). If the distance is greater than 28 mm (1.1 in), use
finger pressure to slowly retract the pintle. The force required to retract the pintle of a new valve will not cause damage to the valve.
2. Lubricate the IAC valve O-ring (2) with clean engine oil.
3. Install the IAC valve O-ring (2) on the IAC valve (3).
4. Install the IAC valve (3).
5. Apply Loctite 262 to the IAC valve attaching screw threads if necessary.
NOTE: Refer to the Fastener Notice in Service Precautions.
6. Install the IAC valve attaching screws (4).
Tighten
Tighten the IAC valve attaching screws to 3 N.m (27 lb in).
7. Connect the IAC valve electrical connector.
8. Perform the Idle Learn Procedure. Refer to PCM Idle Learn Procedure.
