WINDSHIELD WIPER CHATTER AND WIPEABILITY

SUBJECT: WINDSHIELD WIPER BLADE CHATTER/WIPEABILITY CONCERNS (REPLACE BLADES/INSTALL SPACER)

VEHICLES AFFECTED: 1982-92 "J" MODEL

This bulletin is being revised to add the 1992 model year and also includes the revised wiper blade for all 1982- 92 "J" vehicles.

CONDITION:

Some 1982-92 "J" vehicles may experience wiper blade chatter and wipeability concerns.

IMPORTANT: Before replacing any part, clean windshield with GM windshield cleaner, P/N 1050011 or equivalent. The glass is clean when rinse water does not "bead-up" across entire glass surface. Multiple cleanings may be required to remove all contaminants. Also, clean the wiper blades by using a cloth that has been saturated with full strength washer solution by wiping vigorously.

CORRECTION:

A revised, all metal wiper blade with six pressure points is available which may correct most wipeability concerns. This design replaces the four pressure point design as shown in Figure 2.

Replace both blades with P/N 22110234. Use appropriate labour operation and time.

Coupes and Convertibles only:

If conditions persist, follow the procedure below.

Install spacer package, P/N 22111290, over driver side linkage housing as shown in Figure 1. Make sure spacer is correctly oriented.

Install new screws provided and torque evenly to 8 N.m (70 lbs. in.).

NOTE: When reassembling cowl, make sure that washer hose is reconnected (and not pinched).

If an interference condition results between the wiper arm head casting and the cowl clearance hole, use a file to enlarge hole at interference point.

This procedure should not be used for 1993 vehicles, as a revised arm has been introduced which incorporates a revised blade angle.

WARRANTY INFORMATION

For vehicles repaired under warranty use:

Labour Time: 0.4 Hours

** BULLETIN REFERENCES: Corporate Ref. 078308

General Motors of Canada 90-2-258 Pontiac Division 90-8-32 Oldsmobile Division 88-T-159 Buick Division 89-10-37 Cadillac Division T-91-45

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.