FRT. DOOR GLASS DISENGAGES REPAIR PROCEDURE OUTLINED

MODEL AND YEAR: 1987 CORSICA

Customer comments of disengaged front door glass on 1987 Corsicas may be due to either the front door glass rear guide becoming unglued or the glass front run channel retainer being mislocated.

These conditions can be repaired by replacing the door glass and guide with a new door glass and mechanically retained guide and/or repositioning the front run channel retainer and tightening in a proper sequence.

In either case the front run channel retainer may have become bent or distorted and should be inspected and replaced if necessary.

The following procedure should be used when replacing the door glass and guide. A rework of the rear sealing strip must be performed when doing this operation and is in the procedure.

If the glass is disengaged with the door glass and rear guide still intact, the front run channel retainer will require repositioning. After inspection ( and replacement if damaged), refer to steps 7, 8 and 9 in the install or connect portion of the procedure for the proper sequence.

As always, operate the door glass prior to door trim installation to insure a satisfactory repair.

SERVICE PROCEDURE:

Remove or disconnect

1. Door trim panel. Refer to the Corsica/Beretta Preliminary service Manual (ST-374-87) for further instructions on trim panel removal/installation. Special Care is required when removing door handle, pull cup so as not to damage plastic fastener (See Figure 1, #2).

2. Inner belt sealing strip.

3. Water deflector (loosen).

4. Front run channel retainer screws (Figure 2).

5. Front run channel retainer (Figure 2).

6. Rear guide assembly on inner rear leg of upper doorframe by carefully using hammer and block of wood to drive forward, releasing clips (3) from metal flange (Figure 3).

7. Rear run channel by lowering door glass and pulling run channel forward out of door frame and sliding upward to disengage rear glass guide from run channel retainer.

8. Door glass assembly by rotating to disengage regulator roller from sash channel and lifting glass up and inboard of door frame.

The following steps are to be performed to remove the door frame scalp moldings in order to modify the lower corner of the sealing strip on the rear portion of scalp molding.

Remove and disconnect

1. Trim cover to access outside mirror mounting screws.

2. Outside rear view mirror.

3. Outer belt sealing strip.

4. Screw at forward location of door frame scalp molding.

5. Tape the painted surface of the door frame next to scalp molding to prevent damage during scalp molding removal.

6. Door frame scalp molding by using hammer and block of wood to disengage clips from door frame flanges (Figure 4).

7. After placing the scalp molding face down on a clean protected work surface, remove the shaded portion (as shown in Figure 4, View A) of the rear sealing strip by using metal shears. (Be careful not to bend or distort the sealing strip during this operation).

Install and replace (as required)

1. Inspect the front run channel retainer for damage - replace only as required.

Install or connect

1. Door frame scalp molding by installing the rear upper corner to the flange first and seating the remaining molding to flange. Install the screw on the front portion of the scalp molding.

2. Rear guide on inner flange of rear upper door frame.

3. Rear run channel assembly by locating the rear upper corners and front portion near mirror assembly first and seating the remaining portions into the door upper frame. (Lube with soap solution to installation).

4. Outer belt sealing strip.

5. Outside rear view mirror.

6. New door glass by lowering glass inboard of frame and rotating to engage regulator roller and sash channel. Position lower rear edge of glass in run channel and pull glass rearward to snap guide into rear run channel retainer.

7. Front run channel retainer by snapping onto front glass quide and positioning to mounting slots on door inner panel. (Loosely install mounting screws).

8. Run glass to up position and tighten upper front run channel retainer mounting screw.

9. Run glass to down position and tighten lower front run channel retainer mounting screw.

10. Inner belt sealing strip.

11. Water deflector.

12. Trim cover to access mirror mounting screws.

13. Door trim panel.

Parts Information

Part Name Part Number --------- ----------- Door Glass (clear) R.H. 10087224 Door Glass (clear) L.H. 10087225 Door Glass (tinted) R.H. 10087226 Door Glass (tinted) L.H. 10087227 Run Channel Retainer R.H. 20493424 Run Channel Retainer L.H. 20493425

Labor Allowances:

Front run channel retainer - use published allowance

Door glass replacement and sealing strip rework:

Labor Operation Number: T 1210 (right) T 1211 (left)

Labor Time : 1.2 Hours per 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.