Inflator Solenoid
WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
Cargo vans will not have the inflator option.
The inflator solenoid has battery voltage to it at all times and is controlled buy the height sensor with providing a ground to the solenoid. The solenoid valve is mounted to the compressor bracket under the vehicle.