Initialization Procedure

WARNING: This page is about a different car, the 2008 Pontiac G8. However, it is still accessible from the selected car via links, so may be relevant.

Install the power sunroof actuator. Refer to Sunroof Motor/Actuator Replacement .
Ensure that all electrical harness connectors are connected.
Turn the ignition to ON.

Fig 1: View Of Sunroof Dial At Full Vent Position

Courtesy of GENERAL MOTORS CORP.

Turn the sunroof dial to the full vent position (1).
Press and hold the sunroof dial switch in for a minimum of five seconds to activate the sunroof initialization process. The sunroof will move to the hard stop position and will stop in the soft stop position.
Release the switch.