GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the left or right sound insulator panel. Refer to Instrument Panel Insulator Replacement in Instrument Panel, Gages and Console.
  2. Remove the headliner as required. Refer to Headlining Trim Panel Replacement in Interior Trim.

  3. Object Number: 740787  Size: SH
  4. Disconnect the drain hose drain port (1) connection from the sunroof module.
  5. Cut through the sealer that is located inside the bottom of the windshield pillar in order to loosen the drain hose (1).
  6. Use a stiff rod bent at 90 degrees.

  7. Remove the sunroof drain hose (1) from the windshield pillar.

Installation Procedure


    Object Number: 621684  Size: SH
  1. Route the sunroof front drain hose (1) through the windshield pillar and into the drain hole. The drain hose is located near the door hinges.

  2. Object Number: 740787  Size: SH
  3. Connect the sunroof front drain hose drain port (1) connection to the sunroof module.
  4. Apply sealer to the inside bottom of the winshield pillar and around the sunroof front drain hose (1).
  5. Install the headliner. Refer to Headlining Trim Panel Replacement in Interior Trim.
  6. Install the left or right sound insulator panel. Refer to Instrument Panel Insulator Replacement in Instrument Panel, Gages and Console.