Automatic headlamp leveling calibration must be performed after a ride height sensor or automatic headlamp leveling module has been serviced. The calibration procedure will set both of the ride height sensors "centered" value. This value is used by the leveling modules to determine the proper amount of headlamp adjustment required for vehicle conditions. The following criteria must be met before preforming the calibration procedure:

Install a scan tool. Turn ON the ignition, with the engine OFF. Select Calibrate Module and follow the directions displayed on the screen. Once the calibration procedure has been completed, verify the calibration by selecting the calibration procedure on the scan tool an additional time. If mechanical adjustments are required refer to Headlamp Aiming .