GM Service Manual Online
For 1990-2009 cars only

Important: The sunroof actuator is timed at the factory. If there is battery voltage applied to a new sunroof actuator, the pre-timed settings within the sunroof actuator are lost and cannot be reset or used to accommodate proper installation.

There should be no battery voltage applied to a new sunroof actuator until the following conditions are satisfied:

The power sunroof actuator is installed to the sunroof control module.

Initialization Procedure

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

  4. Object Number: 1938980  Size: SH
  5. Turn the sunroof dial to the full vent position (1).
  6. 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.
  7. Release the switch.

Teach Mode Procedure

  1. Press and hold the sunroof switch in within 2 seconds of the initialization procedure.
  2. Hold the switch in until the sunroof moves to the full open position then moves to the closed position and stops.
  3. Release the switch.
  4. Verify the operation of the sunroof in all positions.