Jimm 1/5/2013Quite possibly the IAC valve is faulty, may also be related to a simple engine vacuum leak or hose connection. Check these things first before replacing the IAC valve.
Try the many on-line auto parts sources, such as; www.autopartswarehouse.com or www.rockauto.com for the replacement parts. For example, they (RockAuto) list the IAC valve for around $146.00 for your vehicle.
They (Rock Auto) list the