SERVICE MANUAL UPDATE SEC. 5E ABS REVISED HYDRAULIC UNIT

SUBJECT: SERVICE MANUAL UPDATE - ANTILOCK BRAKES REVISED HYDRAULIC UNIT LEAKDOWN CHART

MODELS/YEARS: 1986-88 EIGHTY-EIGHT AND NINETY-EIGHT

Below is a revised Hydraulic Unit Leakdown Chart. it replaces the one found in the following service Manuals:

1986 Firenza, Calais, Cutlass Ciera, Delta 88 and Ninety-Eight (VOL 1), Page 5E-42

1987 Firenza, Calais, Cutlass Ciera, Delta 88 and Ninety-Eight (VOL 1), Page 5E-51

1988 Delta 88 Royale and Ninety-Eight Regency, Page 5E-48

Please mark a reference to this bulletin in your copy of the affected service manuals.

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.