Front Door Glass - Becomes Disengaged from Run Channel
Bulletin 86-10-23Date Sept. '86
Ref. No. 86-151-10
SUBJECT: FRONT DOOR GLASS RUN CHANNEL GUIDE DISENGAGEMENT AND BINDING
MODELS AFFECTED: 1986 LESABRE 1985-86 ELECTRA
A condition may exist on some 1986 LeSabres, and 1985-86 Electras in which the front door glass becomes repetitively disengaged from the run channels. Several factors that may contribute to this condition include:
^ Improper adjustment of door glass during reinstallation.
^ Rear run channel guide not properly secured.
^ Wrong guide clip(s) installed.
^ Mirror "patch" insulator binding in front run channel.
^ Regulator lacks up stop and overtravel occurs.
Usage of the following information will help ensure that the repair is done right the first time.
IMPROPER ADJUSTMENT OF FRONT DOOR GLASS
Follow recently published procedure outlined in Service Bulletin 86-10-9A, dated, July, 1986.
WRONG GUIDE CLIPS
Two door glass thicknesses were used. Door glass on some very early 1985 Electras were 5 mm thick. It then went to 4 mm and reverted back to 5 mm in May, 1985. Different glass thickness required different clips. Breakpoints for the latest change in 1985 to 5 mm thick glass are:
Orion Plant F4386037 - Oldsmobile
Wentzville Plant F1350147 - Oldsmobile
F1499216 - Buick
In 1986, front door glass thickness is 5 mm.
If unsure of the glass thickness, use a micrometer and measure.
5 mm = .20" 4 mm = .16"
Guide clips are color coded; black for 4 mm and gray for 5 mm. Correct parts information is:
5 MM 4 MM
Front 20487631 20487630
Rear 20478732 20478733
Parts are available through GMWDD.
REAR GUIDE CLIP NOT SECURED
A worn clip mold condition existed on early 1986 models and may cause clip hinge binding and prevent securing of the rear clip through the glass. This condition was corrected in December. Dealer stock ordered prior to January should not be used. GMWDD current stock is good.
It is best to replace both front and rear guide clips if either one has disengaged from run channel. Make sure that new clips are properly secured through glass. Inspect and replace run channel retainer if any distortion or damage is evident. Follow removal and installation procedure in Section 5C of 1986 Body Service Manual. The run channels should not be lubricated to correct guide clip disengagement condition. Guide clips may be lubricated with a soap or silicone base lube.
MIRROR "PATCH" INSULATOR REWORK
The mirror "patch" filler or insulator may cause a slight twist or bend in the front upper run channel due to the gasket interfering with the run channel upper retainer bracket. This interference causes a bind and does not allow the retainer to move freely when adjusting the glass. Correction of this condition will also reduce window operating efforts. The rework should be done before adjusting the door glass and consists of the following steps:
1. Remove mirror cover plate.
MIRROR COVER PLATE:
2. Remove a 20 mm (.80") wide section by 13 mm (.52") deep section at the rear edge of the insulator centered between the two rear stud holes in the mirror cover plate. Refer to Illustration. This will allow free movement of the front run channel to upper attachment screw.
In plant start of change breakpoints are:
Buick City GH462000 - Buick LeSabre
Orion SOP 1987 - Olds 98
Wentzville G1502860 - Buick Electra
G1334768 - Olds 98
G1835762 - Olds 88
Willow Run GW405640 - Olds 88
Regulator Lacks Up Stop
Late production regulators have an up stop to prevent tape drive overtravel. Service stock is being updated and a future bulletin will indicate new part numbers for correction of this condition.
WARRANTY INFORMATION FOR MIRROR "PATCH" FILLER REWORK
LABOR OPERATION NUMBER: T5121
LABOR HOURS: .3 HRS. (DOES NOT INCLUDE DOOR TRIM R&R)
TROUBLE CODE: 92