Removal (2.2L - VIN 4 & 2.4L)
WARNING: This page is about a different car, the 2002 Pontiac Sunfire and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
IAC valve is located on side of throttle body. See Fig 1. Turn ignition off. Disconnect negative battery cable. Disconnect harness connector from IAC valve. Remove IAC valve screws. Remove IAC valve and "O" ring from throttle body assembly.