SERVICE MANUAL UPDATE ELECT. REVISED HEATED W/SHIELD MODULE. Buick Park Avenue 1991

THE HEATED WINDSHIELD CONTROL MODULE, REPLACE PROCEDURE, ON PAGE 171, HAS BEEN REVISED. THE FOLLOWING ILLUSTRATION DEPICTS CORRECTED REMOVAL AND INSTALLATION PROCEDURES.

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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.