For 1990-2009 cars

# WEBASTO SUNROOF SLIDING GLASS WEATHERSTRIP (GENERAL INFO)

#### SUBJECT: WEBASTO SUNROOF SLIDING GLASS PANEL WEATHERSTRIP - NEW WEATHERSTRIP KIT

#### MODELS/YEARS: 1988-91 CUTLASS CIERA, 1988-92 EIGHTY EIGHT NINETY EIGHT AND TORONADO

This bulletin supplements information regarding replacement of the glass panel weatherstrip in Dealer Technical Bulletins 89-T-36 and 90-T-104. For general service information and procedures refer to Section 10 of the appropriate service manual. A factory-installed sunroof can be identified by CF5 on the Service Parts Identification Label.

An improved sunroof sliding glass panel weatherstrip is now available for service of Webasto sunroof equipped vehicles (option CF5) which are not equipped with the CB5 full vinyl top option. The weatherstrip kit, P/N 3635717, includes a sliding glass panel weatherstrip seal and a one-ounce bottle of Loctite Black Max 380 Black Toughened Instant Adhesive. Loctite Black Max 380 Adhesive must be used when installing the sunroof weatherstrip. Failure to use Loctite Black Max 380 Adhesive may result in failure of the weatherstrip to properly retain on the sliding glass panel molding, resulting in wind noise complaints. A sufficient quantity of Loctite Black Max 380 Adhesive is included in the weatherstrip kit. This adhesive may also be purchased locally through specialized supply houses.

#### ADHESIVE SHELF LIFE:

Loctite Black Max 380 Adhesive has a limited shelf life and should be refrigerated during storage. Before installing a sunroof weatherstrip seal as described in this bulletin, check the date code printed on the back label of the Loctite Black Max 380 Adhesive which is included in the weatherstrip kit. The date code, shown in Figure 5 on page 6 of this bulletin, indicates the month and year in which the adhesive was manufactured. Loctite Black Max 380 Adhesive has a shelf life of 12 months from the date of manufacture. As a result, the dealer ordering this weatherstrip seal kit is responsible for the following:

o Order only as many weatherstrip seal kits as you anticipate using over the next thirty days.

o Upon receipt of the weatherstrip seal kit from GMSPO, open the package and inspect the date code located on the back label of the Loctite Black Max 380 Adhesive bottle as shown in Figure 5. If the date code is greater than 12 months prior to the current date, return the weatherstrip seal kit to GMSPO utilizing procedures for defective material described in the GMSPO Parts Policy and Procedures Manual.

o If weatherstrip seal kits have been received which will not be used within the upcoming thirty days, the Loctite Black Max 380 Adhesive should be removed from the kit and refrigerated until use occurs.

o If the weatherstrip seal kit is not used upon receipt at the dealership, and the adhesive was in-date at the time of receipt, it is the dealer's responsibility to ensure that the adhesive has not expired before use.

o If adhesive is left over after completion of the weatherstrip seal kit installation procedure, it should be refrigerated if it is intended to be used at a later date. In any case, Loctite Black Max 380 Adhesive should be discarded if the date code on the back label of the bottle is greater than 12 months prior to the current date. Refer to Figure 5 for interpretation of the date code information.

#### INSTALLATION PROCEDURE:

1. Remove sunroof sliding glass panel as described in the Roof Section of the appropriate service manual.

2. Place glass panel upside down on a padded workbench, being careful not to scratch the glass surface.

3. Remove the old weatherstrip seal by peeling the seal off of the glass panel molding, starting at the butt joint.

4. Using a clean shop rag, remove any loose adhesive material from the weatherstrip seal mounting surface on the glass panel molding.

5. Apply a bead of Loctite Black Max 380 Adhesive to the glass panel molding/weatherstrip seal contact area. Refer to Figure 1.

6. Begin installation of the weatherstrip seal at either side of the glass panel. The position of the end of the weatherstrip determines the location of the weatherstrip butt joint. The butt joint must be positioned near the center of either the right or left side of the sliding glass panel (the shorter sides of the panel). THE BUTT JOINT CANNOT BE POSITIONED ON THE FRONT OR REAR OF THE PANEL (the longer sides). Refer to Figure 1.

7. Install weatherstrip seal around the sliding glass panel, making sure that the weatherstrip is tight against the glass panel molding. When you are within approximately six inches of the starting point, allow the weatherstrip to hang free from the molding. Ovedap the free end and the installed end of the seal as shown in View A of Figure 1.

8. Cut the weatherstrip seal, allowing 3-5mm (1/8-3/16") overlap of the two ends as shown in Figure 1. Be careful to cut the weatherstrip off squarely.

9. Apply a small amount of Loctite Black Max 380 Adhesive to each end of the weatherstrip seal.

10. Finish installation of the weatherstrip seal by first installing the free end of the weatherstrip at the butt joint and forcing the remainder of the weatherstrip into position as shown in Figure 2. Installing the weatherstrip in this manner will ensure a tight joint and correct sealing.

11. After completing installation of the weatherstrip seal, allow the adhesive to cure for at least 10 minutes before installing the sliding glass panel in the vehicle. Refer to Figure 3.

12. Install the glass panel in vehicle using the procedures described in the appropriate service manual.

13. Adjust glass panel fore/aft and up/down position as described in the appropriate service manual.

UP/DOWN (GLASS PANEL HEIGHT) SPECIFICATION. ------------------------------------------

o Adjust front corners of glass panel so that it is flush to 1.5mm (flush to 0.060") BELOW roof panel. Refer to Figure 4.

o Adjust rear corners of glass panel so that it is flush to 1.5mm (flush to 0.060") ABOVE roof panel. Refer to Figure 4.

FORE/AFT SPECIFICATION: ---------------------- o The sliding glass panel weatherstrip seal should make continuous contact with the roof panel around the entire sunroof opening. To check for contact, completely close the sunroof and insert a business card or 0.040" thickness gage between the sunroof seal and roof panel. Check for seal-to-roof panel contact by sliding the card around the entire seal contact area. The card should drag slightly as it is pulled between the seal and the roof panel.

o If the gap is excessively wide or narrow at the front or rear, adjust the glass panel fore/aft position as described in the appropriate service manual.

Parts are currently available from GMSPO.

Black Max and Loctite are registered trademarks of the Loctite Corporation.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.