ELECT. SYSTEM MANUAL UPDATE (ABS) REVISED EBCM VOLT TEST

SUBJECT: ELECTRICAL SYSTEMS MANUAL UPDATE - ANTILOCK BRAKE SYSTEM REVISED EBCM VOLTAGE TESTS

MODELS AFFECTED: 1991 LESABRE; 1991 PARK AVENUE/PARK AVENUE ULTRA

THIS BULLETIN IS BEING REVISED DUE TO AN ERROR THAT COULD LEAD TO MIS-DIAGNOSIS OF THE ANTILOCK BRAKE SYSTEM.

Please discard Buick Bulletin No. 91-8-34 (Corp. #108116) and use the following revised TEST M: EBCM VOLTAGE for proper Antilock Brake diagnosis:

1991 LeSabre, page 111 1991 Park Avenue/Park Avenue Ultra, page 104

Please update your respective Electrical Systems Manuals accordingly.

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.