Installation Procedure

WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Before you install a new sunroof motor/actuator or re-install the old actuator to the sunroof module, ensure that the actuator is timed to the closed position.

Verify that the original sunroof motor/actuator or the new sunroof motor/actuator is timed to the closed position by preforming the following steps.
1. The hole in the large timing gear (3), the notch in the disk (2) below the drive gear and the scribe mark (1) on the drive gear should all be in line with each other.
  
  Fig 1: Locating Hole In Large Timing Gear
  Courtesy of GENERAL MOTORS CORP.
2. If the actuator is not timed to the closed position, connect the switch, headliner harness and express module to the sunroof motor/actuator and run the actuator to the closed position. Verify all timing marks are aligned.
Connect the wire harness to connector (1) on the sunroof motor/actuator.
Position the sunroof motor/actuator to the sunroof module.
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the sunroof actuator bolts (2) to the sunroof motor/actuator.
Tighten

Tighten the sunroof motor/actuator bolts to 3 N.m (27 lb.in).

Fig 3: Connecting Wire Harness Connectors

Courtesy of GENERAL MOTORS CORP.

Connect the wire harness connectors to the express module (8), and secure the wire harness to the drive tube and return tube (5, 6) with tie wraps.
Install the headliner as necessary. Refer to HEADLINER REPLACEMENT in Interior Trim.