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ELEC. MANUAL UPDATE-ABS SYS./ PRESSURE MOD. VALVE TEST

SUBJECT: ELECTRICAL MANUAL UPDATE/SEC. - ANTILOCK BRAKE SYSTEM/ PRESSURE MODULATOR VALVE ASSEMBLY VOLTAGE TEST

VEHICLES AFFECTED: 1991 B AND C MODELS

REVISED ELECTRONIC BRAKE CONTROL MODULE (EBCM) SOFTWARE

LESABRE

In Test A Pressure Modulator Valve (PMV) Assembly Voltage Test on Page 106, Fuse 8, in the Instrument Panel Fuseblock must be removed prior to any measurements being made. Add the words "Remove Instrument Panel Fuseblock Fuse 8", as a condition to Test A in your LeSabre Electrical Service Manual.

PARK AVENUE - PARK AVENUE ULTRA

In Test A Pressure Modulator Valve (PMV) Assembly Voltage Test on Page 99, Fuse 19, in the Instrument Panel Fuseblock, must be removed prior to any measurements being made. Add the words "Remove Instrument Panel Fuseblock Fuse 19:, as a condition to the Test A in the Park Avenue - Park Avenue Ultra Electrical Service Manual.

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.