FRONT DOOR WINDOW RATTLE OR CHATTER NOISE

MODELS AFFECTED: 1986 ELDORADOS

Some 1986 Eldorados built prior to VIN 1G6EL5785GU602775 may exhibit a chatter or rattle condition in the door glass area. This condition can be corrected by using the following procedure.

1. Remove door glass assembly as described in Section 5 of the 1986 Body Service Manual.

2. Lay glass assembly on a flat protected surface. Using a sharp knife, scribe a line 4mm (11/64") from the outer edge of the rear guide as shown in illustration.

3. Using a coarse file, remove 4mm (11/64") of material from the rear guide as shown in shaded area of the illustration (make sure finished edge is smooth by finishing with a fine file).

4. Replace door glass assembly.

For warranty purposes, use the following labor operations

T6154 Right Side .9hour T6155 Left Side .9hour

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.