Roof Panel - Dimple Appearance Running Front to Back
File In Section: 10 - BodyBulletin No.: 63-10-50
Date: March, 1997
Subject:
Wavy or Dimpling Appearance in Roof Panel Running Front to Back or
Excessive Rain Noise (Replace Cardboard Roof Insulator Adhesive)
Models:
1995-97 Buick Riviera
1997 Buick Park Avenue
1995-97 Oldsmobile Aurora
Condition
Some owners may comment on a wavy or dimpling appearance in the roof panel running front to back or excessive rain noise.
Cause
The appearance condition may be caused by an excessive amount of adhesive on the cardboard roof insulator. The excessive rain noise may be caused by an insufficient amount of adhesive on the cardboard roof insulator.
Correction
Remove the headliner and replace the cardboard roof insulator adhesive with the proper amount.
Important:
It may be necessary to replace the cardboard roof insulator if it is damaged in the removal procedure.
Cardboard Roof Insulator
Removal or Disconnect
1. Headliner assembly. Refer to Section 10-9 of the Service Manual.
2. Carefully separate headliner from cardboard roof insulator.
3. Starting at one corner of cardboard, pulling downward, cut adhesive bead using a sharp putty knife or equivalent.
Notice:
^ Care should be taken not to damage roof panel when removing old adhesive.
^ When servicing vehicles with rear vanities, be sure to remove the rear vanities before dropping the headliner. Failure to remove rear vanities will cause roof panel damage. Also, leave the black rear vanity retainer glued to the roof. If you must remove the retainer, be very careful or damage to the roof panel may occur.
4. Cut off all of the adhesive beads.
5. Cardboard insulator.
Important:
It is not necessary to remove all of the old adhesive.
Install or Connect
1. Apply 6 mm to 9 mm (1/4 to 11/32 inch) beads of adhesive 15 mm (5/8 inch) wide (Figure 1) where it was previously removed from cardboard insulator. When a new cardboard roof insulator is used, place adhesive as shown in Figure 2; the adhesive location is marked on the cardboard insulator. Both the Buick/Oldsmobile G car and Buick C car use five beads of adhesive.
Important:
Use Betamate Urethane adhesive, P/N 12378192, for this installation.
2. Place cardboard insulator to roof panel.
Important:
Roof insulator must be installed within five minutes of adhesive application.
3. Headliner.
Important:
Gluing headliner to cardboard roof insulator is not required.
Parts Information
P/N Description
12378192 Betamate Urethane Adhesive
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use as shown.