DOOR GLASS DISENGAGEMENT INSPECTION AND READJUSTMENT

DOOR GLASS DISENGAGEMENT

VEHICLES AFFECTED: 1988 BUICK REGALS -----------------

Comments have been received of door glass assemblies disengaging from channels on 1988 Regals. The following procedure should be followed if this condition occurs:

1. Remove the window assembly from the door and inspect (proceed to Step 2 if glass/guides are functional). If the glass guides have become debonded from the glass or substantial pin guide damage is evident, the glass assembly must be replaced with the following parts (Refer to Figure 2).

Part Number 10138344 Right Side Part Number 10138345 Left Side

2. Remove the door glass run channel and front run channel retainer. Replace the run channel with the following parts:

Part Number 10120598 Right Side Part Number 10120599 Left Side

Care must be taken to prevent distortion of the glass run channel during installation. Should any distortion occur, the retaining function of the channel may be decreased and if that is the case, the run channel should be replaced.

3. Inspect the front run channel retainer. Should any distortion be evident, the run channel retainer must be replaced with the following part numbers (Refer to Figure 1).

Part Number 10129640 Right Side Part Number 10129641 Left Side

4. Reinstall the door glass assembly using the adjustment procedure on page 5W-13 of the 1988 Regal Service Manual. It is extremely important to ensure that the glass assembly is engaged into the glass run channels and that the front run channel retainer is adjusted properly.

Use applicable Labour Operation Number and Labour 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.