For 1990-2009 cars

# REAR DOOR GLASS CHATTER (ATTACH LOW FRICTION TAPE)

#### SUBJECT: REAR DOOR GLASS CHATTER (ATTACH LOW FRICTION TAPE ON DOOR GLASS EDGES)

#### VEHICLES AFFECTED: 1992 "N" CAR SEDAN SERIES PONTIAC GRAND AM OLDSMOBILE ACHIEVA BUICK SKYLARK

#### Condition:

---------- Some owners of 1992 "N" car sedans may comment on rear door glass chatter upon operation of rear electric windows.

#### Cause:

------ Excessive friction between glass and upper and lower run channels, resulting in an erratic glass movement known as glass chatter.

#### Correction:

----------- Attach six pieces of low friction segmented tape, Kit P/N 22586239, on rear door glass edges per following procedure:

- Remove rear door glass per 1992 "N" Service Manual procedure.

- Clean glass edges with an all purpose cleaner.

- Attach low friction segmented insulator tape as follows:

- Brown strip to be used on the front edge of glass P/N 22585829 part of kit P/N 22586239.

- White strip with hole punched in backing paper used on rear edge of glass P/N 22585830. The side of tape with hole punched in the backing paper is the narrow side. That side should be applied to the outside surface of glass.

- Remove protective backing from tape.

- Place the first strip of tape beginning approximately 5.0 mm from the tangent at the top of glass (figure 1).

- Allow 5.0 mm clearance between tape strips.

- Repeat procedure on opposite side of glass.

For vehicles repaired under warranty use:

Labor Time: 0.8 Hour each side

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.