A/C INTERMITTENTLY INOPERATIVE INSUFF. AIR FLOW-CONDEN. CORE. Buick Century 1985

Models Affected: 1984 and 1985 Century With 3.0L V6 engine (Vin Code E) 1985 Electra with 3.0L V6 Engine (Vin Code E)

When a 1984 or 1985 Century equipped with a 3.0L engine and built before April, 1985 or a 1985 Electra with 3.0L engine is operated at high ambient temperatures with the air conditioning on, and under the operating conditions listed below; the driver may experience intermittent reduced air conditioning performance:

Driving up long, steep highway grades Idling the engine Driving in congested city traffic

This reduced air conditioning performance may be the result of insufficient air flow through the condensor core.

To repair this condition the coolant fan resistor, located on one leg of the coolant fan motor support, may be bypassed by installing a coolant fan resistor jumper, part number 12046159, available from GMWDD. Disconnect the resistor and connect lead to the coolant fan resistor jumper. Remove resistor and attach jumper to leg of coolant fan motor support using screw that previously retained resistor. Bypassing the resistor allows the coolant fan to operate on high speed whenever it runs.

Production Centurys built after March, 1985, have improved engine coolant fan controls to compensate for this condition.

WARRANTY INFORMATION

Labor Operation: T5097

Labor Hours: .3

Trouble Code: 92

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.