Sensor Location

[WReX]

can anyone tell me where i can find the IAC valve on a 2002 silverado, 5.3L V8?

thanks

[HD2500]

It's located @ 12:01 on your air intake.


Notice
Do Not push or pull on the IAC valve pintle on IAC valves that have been in service. The force required to move the pintle may damage the threads on the worm drive.
Do Not soak the IAC valve in any liquid cleaner or solvent, as damage may result.

Clean the IAC valve O-ring sealing surface, the pintle valve seat, and the air passage.
Clean the IAC valve using GM cleaner P/N 1052626 or GM X-66A. Use a shop towel or parts brush to remove heavy deposits.
If the air passage has heavy deposits, remove the throttle body for complete cleaning.
Shiny spots on the pintle or seat are normal and do not indicate misalignment or a bent pintle shaft.
Inspect the IAC valve O-ring for cuts, cracks, or distortion. Replace the O-ring if the O-ring is damaged.

Measure the distance between the tip of the IAC valve pintle and the mounting surface (1). If the distance is more 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 does not cause damage to the valve.

[bowtieguy]

I may be over thinking, trying to figure out what an IAC valve is. some one tell me what this valve is and what is does?

[maxwedge]

Originally Posted by bowtieguy

I may be over thinking, trying to figure out what an IAC valve is. some one tell me what this valve is and what is does?

Controls the idle speed based on commands from the pcm.