The Idle Control Valve service requires you to begin by taking off the
Throttle Body followed by the removal of the IAC valve. The process for vehicles without California specification requires uninstallation of the 4 screws and gasket and IAC valve. The servicing of the IAC valve for California vehicles requires removing 3 screws and the gasket and valve. The technician should install a new gasket onto the throttle body during installation. Reinstallation occurs in the opposite sequence of disassembly.