Diagnostic Aids
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
The chirping noise may be intermittent due to moisture on the drive belt(s) or the accessory drive pulley(s). In order to duplicate the customer's concern, It may be necessary to spray a small amount of water onto the drive belt(s). If spraying water on the drive belt(s) duplicates the symptom, cleaning the accessory drive pulley(s) may be the most probable solution.
A loose or improper installation of a body or suspension component, or other item(s) on the vehicle may cause the chirping noise.