Customer comments of squeaks in the area of the upper door to roof on 1988 and early 1989 Grand Prix models may be due to the door frame sticking slightly to the auxiliary sealing strip on the roof.
New parts are available from GMSPO to repair this condition. The part numbers are as follows:
10129638 (Right) Weatherstrip assembly side roof rail auxiliary 10129639 (Left)
Parts are currently available from GMSPO.
Use applicable labor operation number and labor time.
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.