Liftgate Calibration Except Avalanche andEXT Escalade

Important: To ensure proper calibration of the liftgate, the liftgate assembly must be at room temperature during calibration.

Use this procedure after replacing, repairing, or disassembling any portion of the power liftgate assembly.

1. Connect the Tech 2 to the vehicle.
2. Select Special Functions in the Liftgate Module menu.
3. Select LGM Open/Close Test.
4. Follow the on screen instructions.