HIGH EFFORT MANUAL WINDOW REGULATOR (REWORK RUN CHANNEL)

SUBJECT: HIGH EFFORT MANUAL WINDOW REGULATOR - REWORK WINDOW RUN CHANNEL/INSTALL COUNTERBALANCE SPRING

MODEL/YEARS: 1991 CUTLASS CALAIS

CONDITION: Some 1991 Cutlass Calais models may exhibit high effort when rolling the front windows up and down.

CAUSE: Excess rubber on ends of window run channel.

CORRECTION:

1. Remove door trim panel according to instructions in Section 10-6 in the 1991 Cutlass Calais Service Manual.

2. Remove outside mirror.

3. Remove window run channel.

4. Check measurement between mirror patch inboard and outboard sides of run channel, Figure 1, View A. If opening is less than 22 mm (7/8 inch), open mirror patch area to 22 mm (7/8 inch) by grinding.

5. Grind ends of window run channel 1.6 mm (1 /1 6 inch) deep as shown in Figure 1 Sections "C-C" and "D-D" from shield areas only, and remove a length 90 mm at the front and 195 mm at the rear of the run channel as shown in Figure 1 View A and View B.

6. Remove door window regulator assembly (Figure 2).

7. Remove production counterbalance spring using tool J 38864 (Figure 3).

8. Install counterbalance spring P/N 20053546 using tool J 38864 or equivalent.

9. Clean grease off regulator (lower sash cam and front window retainer), re-grease regulator with grease P/N 12345718 or equivalent.

10. Install door window regulator assembly.

11. Install window run channel.

12. Install outside mirror and door trim panel.

Parts are currently available from GMSPO.

Labor Operation Number: Right Side: T1896 Left Side: T1945

Labor Time: 1.2 hours, each 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.