SERVICE MANUAL UPDATE SEC.8A REVISED ELECT. BLOWER DIAG.

SUBJECT: SERVICE MANUAL UPDATE - ELECTRICAL DIAGNOSIS - REVISED BLOWER MOTOR DIAGNOSIS CHART # 1

MODELS/YEARS: 1990-91 SILHOUETTE

This bulletin updates CHART #1, BLOWER MOTOR INOPERATIVE OR WILL NOT OPERATE AT LOW SPEED, found in ELECTRICAL DIAGNOSIS (SECTION 8A) of the 1990 and 1991 Silhouette Service Manuals.

Please use the Chart included in this bulletin instead of Chart 1 on page 8A-63-4 (1990) or page 8A-63-6 (1991).

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.