ENGINE OVERHEAT OR POOR A/C PERFORMANCE-USE 150 WATT FAN. Buick Somerset 1985

For 1990-2009 cars

# ENGINE OVERHEAT OR POOR A/C PERFORMANCE-USE 150 WATT FAN

SOME 1985 "N" MODELS EQUIPPED WITH AIR CONDITIONING AND AUTOMATIC TRANSMISSIONS MAY EXPERIENCE AN OVERHEATED ENGINE AND/OR REDUCED PERFORMANCE OF THE AIR CONDITIONING SYSTEM. WHEN A VEHICLE IS OPERATED AT HIGH AMBIENT TEMPERATURES WITH THE AIR CONDITIONING TURNED ON, AND UNDER THE OPERATING CONDITIONS LISTED BELOW, THE DRIVE MAY EXPERIENCE ENGINE OVERHEATING AND/OR REDUCED AIR CONDITIONING PERFORMANCE: - DRIVING UP LONG, STEEP HIGHWAY GRADES - IDLING THE ENGINE - DRIVING IN CONGESTED CITY TRAFFIC A CUSTOMER MAY COMMENT OF THE FOLLOWING ITEMS IF OPERATED UNDER THE CONDITIONS LISTED ABOVE: - THE COOLANT TEMPERATURE LIGHT IS ON - A HIGH READING IS INDICATED ON THE COOLANT TEMPERATURE GAGE - INSUFFICIENT COOL AIR FROM THE AIR CONDITIONER THESE CONDITIONS MAY BE THE RESULT OF INSUFFICIENT AIR FLOW THROUGH THE RADIATOR AND CONDENSER CORES. TO REPAIR THIS CONDITION, THE 100-WATT ENGINE COOLING FAN CAN BE REPLACED WITH A 150-WATT ENGINE COOLING FAN MOTOR (PART #22040861). IF FOG LAMPS ARE LATER ADDED AS OPTIONAL EQUIPMENT, THE 150-WATT FAN IS REQUIRED. PRODUCTION CARS BUILT AFTER DECEMBER, 1984 WILL BE EQUIPPED WITH THE HIGHER CAPACITY COOLING FAN.

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.