INFO ON MODIFIED WINDOW ADJ. PROCEDURE. Cadillac Allante 1993

For 1990-2009 cars

# INFO ON MODIFIED WINDOW ADJ. PROCEDURE

#### SUBJECT: INFORMATION ON MODIFIED WINDOW ADJUSTMENT PROCEDURE

#### MODELS AFFECTED: 1993 ALLANTES

The following service procedure should be utilized when performing door window adjustments on the 1993 Allante. This procedure supersedes adjustment steps listed in the 1993 Allante Preliminary Service Manual.

1. Verify door hinge and mini-wedge striker adjustments are correct. With the window lowered the door should close with normal effort, be properly aligned to the body, fender, and quarter panel, and not ride up or down on the striker as the door is opened. If door or mini-wedge striker adjustments are required, these must be performed prior to any window adjustments. Refer to the 1993 Allante Service Information Manual for door and/or fender adjustment procedures (Section 10-6).

2. Remove the door trim panel and water deflector. Refer to Service Information Manual Section 10-6 for procedure. Note original position of water deflector; it must be reinstalled in same position to prevent water leaks. Replace water deflector if torn (deflector may need to be re-glued onto the inner panel).

3. Loosen the upper run channel bolts. Refer to Figure 1. Loosen and move rear wedge to lowest position. Refer to Figure 2, View B. With the door open, lower the window to the full down position then raise the window up stopping approximately 25mm from full up position. Tighten both upper run channel bolts to 9-13 Nm (7-9 lbs. ft.) torque.

4. Raise the window to approximately 10mm below full up position and check window parallelism. The gap from the horizontal edge of the window to the roof rail weatherstrip should be even at the front and rear of the window. Refer to Figure 3. Adjust parallelism as needed by loosening and repositioning the inner panel cam bolts. Refer to Figure 2, View C. Tighten the inner panel cam bolts to 9-13 Nm (7-9 lbs. ft.) torque after adjustment.

#### NOTE: Parallelism must be checked on upstroke of window travel.

5. Loosen sash channel bolts. Refer to Figure 2, View A. Move the window rearward just enough to relieve contact with the outer sealing lip of the windshield pillar weatherstrip then snug sash channel bolts (4.2-6.1 Nm/3-4.5 lbs.ft.). Refer to Figure 3.

6. Check the contact between the inside of the window and the windshield pillar weatherstrip. Refer to Figure 3. Proper contact is defined below. Adjust the window in or out as necessay. The adjustment is made by turning the front run channel lower adjustment bolt clockwise (window in) or counterclockwise (window out). Refer to Figure 1. If run channel adjustment bolt travel is not sufficient to allow adjustment, reposition the front and rear run channel guide blocks upward (outboard) or downward (inboard) for additional glass adjustment. Refer to Figure 4.

#### Proper Seal Contact:

A. With the door closed and the window fully raised, the glass should press against the inner sealing surface of the weatherstrip firmly enough to prevent water and wind intrusion. Wetting the inside edge of the glass will visually aid in checking seal contact. You may also use the "dollar bill" test to check seal contact. Insert a dollar bill between the glass and weatherstrip and close the door. Pull the dollar bill out. Good seal contact is indicated by medium to firm pulling effort.

#### NOTE: On some cars the windshield pillar weatherstrip may appear low or "dished" just above the blow out clip causing poor seal to glass contact just in this area. Refer to Figure 4. Inward glass adjustment will not compensate for this low or "dished" effect in the weatherstrip. If this condition causes a water leak or wind noise, fabricate and insert a 1-3mm thick shim behind the weatherstrip retainer in this area to improve seal to glass contact.

B. Lower and raise the window with the door closed and the inside front edge of the window should lightly brush against the inner sealing surface of the weatherstrip. Raising the window should not cause the weatherstrip to pucker or bunch up.

7. Check the contact between the inside of the window and the quarter glass weatherstrip. Refer to Figure 3. For proper contact the window should press against the weatherstrip firmly enough to prevent water and wind intrusion. Adjust the rear of the window in or out as necessary to achieve proper contact. Adjustment is made by turning the rear run channel lower adjustment bolt clockwise (window in) or counterclockwise (window out). Refer to Figure 1. If run channel adjustment bolt travel is not sufficient to allow adjustment, reposition the front and rear run channel guide blocks upward (outboard) or downward (inboard) for additional glass adjustment. Refer to Figure 4.

#### NOTE: The quarter glass can also be adjusted in or out if necessary. Adjustment is made by adding or removing shims behind upper quarter glass hinge. Refer to Figure 5.

8. Check the contact between the inside of the window and the roof rail weatherstrip. Refer to Figure 3. Proper contact is defined below. Adjust the roof rail weatherstrip in or out as necessary. The adjustment is made by repositioning the weatherstrip retainer. Ensure roof rail weatherstrip sections snugly butt against each other, and also provide a smooth continuous sealing surface along the top edge of the glass.

#### Proper Seal Contact:

A. With the door closed and the window full up, the glass should press against the inner sealing surface of the weatherstrip firmly enough to prevent water and wind intrusion. Wet the inside edge of the glass and/or use the "dollar bill" test to check seal contact.

B. Lower and raise the window with the door closed. As the window travels up, the top inside edge of the window should lightly brush against the inner sealing surface of the weatherstrip. The weatherstrip is too far outward if raising the window causes the weatherstrip to pucker or bunch up.

9. Check for proper up stop settings with the window in the full up position. At full up the window should brush by and seat under the outer lip of the roof rail weatherstrip as the door is being closed. Refer to Figure 3. The weatherstrip outer lip should fold or "lip" over the glass slightly to present a shingling or awning effect to wind and water. Also, the window should maintain the parallelism established in step 4. Adjust front and/or rear up stops as required. Refer to Figure 2, View D. Tighten nuts to 9-13 Nm (7-9 lbs. ft.) torque.

10. With the window in the full up position, loosen the sash channel bolts (refer to Figure 2) and move the window forward until the front edge seats into and under the weatherstrip's outer lip. Refer to Figure 3. The outer lip should fold or "lip" over the glass slightly to present a shingling or awning effect to wind and water. The window is too far forward if, when the window is raised or the door is shut, the window pinches, puckers, or lays on top of the weatherstrip outer lip.

11. With the window in the full up position, check for a smooth transition from the mirror mucket (refer to Figure 3) to the window and also continuous contact of the sealing lips along the inside and outside surface of the glass (no waviness). The transition should be checked with slight outward pressure on window or in the door closed position. Loosen the attachment screws to reposition the mucket as required.

12. With the window still in the full up position, raise the rear wedge (refer to Figure 2, View B) until it lightly contacts the rear edge of the window and tighten the wedge attachment screw to 3 Nm (2 lbs.ft.) torque. Use a thin, flat-bladed screwdriver in the adjustment slot to prevent the wedge from rotating when tightened.

#### NOTE: The window and soft top should be cycled and door closed several times to verify the proper operation of door soft top and window.

13. Reinstall the door water deflector and trim panel. Perform water test and wind noise ride evaluation.

For warranty purposes use Labor Operations C0100 at 1.0 hour for right-hand window adjustments and C0101 at 1.0 hour for left-hand door window adjustments.

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.