Circuit Description
WARNING: This page is about a different car, the 2008 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
The automatic level control (ALC) adjusts the vehicle suspension ride height. The automatic level control (ALC) module determines the height of the vehicle based on the signal from the rear height sensor which is supplied a 5-volt reference voltage from the module. The module raises and lowers the vehicle in order to keep the vehicle level.