INTERMITTENT 'TEMP' LIGHT OR OVERHEAT (DIAGNOSIS AND P/N). Pontiac Sunbird 1987

For 1990-2009 cars

# INTERMITTENT 'TEMP' LIGHT OR OVERHEAT (DIAGNOSIS AND P/N)

#### VEHICLES AFFECTED: 1987 J CAR WITH L-4 ENGINES (VIN K AND VIN M)

Some vehicles built before the following VIN breakpoints may have thermostats which are suspected of sticking.

VIN Codes (last 7 digits):

Pontiac 7599843 Oldsmobile K323794 Buick K445035

This condition could result in overheating or owner comments of an intermittent "temp" light.

If this condition is encountered, inspect the radiator and coolant hoses for adequate coolant flow as the engine reaches normal operating temperatures.

If coolant flow is reduced or condition is intermittent, replace the thermostat, with P/N 3059793.

Use applicable Labour Operation and Time.

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.