SERV MANUAL UPDATE-SEC.1B HEATER SYSTEM DIAG

SUBJECT: SERVICE MANUAL UPDATE - HEATER SYSTEM DIAGNOSIS AND ON-VEHICLE SERVICE (USE 1991 SERVICE MANUAL)

MODELS/YEARS: 1990 SILHOUETTE

For Heater System Diagnosis and On-Vehicle Service of a 1990 Oldsmobile Silhouette, refer to Section 1B in the 1991 Oldsmobile Silhouette 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.