SERV. MANUAL UPDATE-SEC.5E1 ABS DIAGNOSIS/CHART

SUBJECT SERVICE MANUAL UPDATE - ABS DIAGNOSIS CHART A - INLET/OUTLET VALVE CIRCUIT TEST

MODELS/YEARS 1991 EIGHTY-EIGHT AND NINETY-EIGHT

REVISED ELECTRONIC BRAKE CONTROL MODULE (EBCM) SOFTWARE

EIGHTY-EIGHT:

Fuse 8 in the instrument Panel Fuseblock must be removed prior to any measurements being made in the test on Page 5El -1 1. Add the words "Remove Fuse 8" as a condition to the test in the third block down on the left side of the page in your 1991 Eighty-Eight Royale Service Manual.

NINETY-EIGHT:

Fuse 19 in the Instrument Panel Fuseblock must be removed prior to any measurements being made in the test on page 5El -1 1 in Chart A Inlet/Outlet Valve Circuit Test. Add the words "Remove Fuse 19" as a condition to the test in the third block down on the left hand side of the page in your 1991 Ninety-Eight Regency Elite/Touring Sedan 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.