For 1990-2009 cars

# SPONTANEOUS WIPER PULSE-WATER ENTRY F-CAR-INSTALL DEFLECTOR

SOME 1982 AND EARLY PRODUCTION 1983 FIREBIRD MODELS WITH HOOD SCOOP MAY EXPERIENCE SPONTANEOUS PULSE WIPER OPERATION DUE TO WATER ENTRY INTO THE PULSE WIPER MOTOR MODULE. THIS CONDITION USUALLY OCCURS WHEN THE VEHICLE IS RUN THROUGH A CAR WASH. THE CONDITION MAY BE CORRECTED BY ADDING UNDERHOOD WATER DEFLECTOR (PART NUMBER 10028254) AND SHIELD (PART NUMBER 20427916) AS FOLLOWS: 1. REMOVE TWO (2) SCOOP TO ORNAMENT SCREWS. 2. INSERT DEFLECTOR TABS BETWEEN SCOOP AND ORNAMENT TABS WITH DEFLECTOR OPENING TOWARDS LEFT SIDE OF VEHICLE. 3. REINSTALL TWO (2) SCREWS (SEE FIGURE 1). 4. INSTALL RUBBER SHIELD (PART NUMBER 20427916) BY SLIDING INTO THE THREE (3) COWL LIP CLIPS (PART NUMBER 10013764) WITH THE NARROW SIDE TOWARD THE CENTER OF THE CAR (SEE FIGURE 2). THE DEFLECTOR WAS ADDED IN PRODUCTION TO 1983 VEHICLES APPROXIMATELY MID-MARCH 1983. THE SHIELD WILL ENTER PRODUCTION LATE IN MAY 1983.

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.