For 1990-2009 cars

# MANUAL UPDATE- SEC. 1B&8A COOLANT FAN A/C PRESS. SWITCH

#### VEHICLES AFFECTED: 1990 C, H

The following corrections are being issued to correct an inaccurate reference between Sections 1B and 8A. Please make these corrections to the appropriate service manuals.

Oldsmobile Page 8A-31-7 - Coolant Ean - Correct Test G description to read: Coolant Fan and/or heavy duty Coolant Fan (with V08 Cooling System) does not run with A/C on, but does operate normally with engine hot.

Oldsmobile and Pontiac:

Page 1B-24 - Under Coolant Fan A/C Pressure Switch, Change "For Fan Switch Diagnosis, see Electrical Diagnosis Section 8A-46 or 8A-47" to "For Fan Switch Diagnosis, see Electrical Diagnosis Section 8A-31-2."

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.