Headlamp Leveling Module Programming and Setup
WARNING: This page is about a different car, the 2006 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
Automatic headlamp leveling calibration must be performed after a ride height sensor or automatic headlamp leveling module has been replaced. Refer to Automatic Headlamp Leveling Calibration Description and Operation in Lighting Systems.