LOW COOLANT LIGHT, ERRATIC TEMP GAGE. Cadillac Cimarron 1987

For 1990-2009 cars

# LOW COOLANT LIGHT, ERRATIC TEMP GAGE

#### SUBJECT: LOW COOLANT LEVEL

#### MODELS AFFECTED: 1987-1988 CIMARRONS

Some 1987-1988 Cimarrons may experience a condition of low coolant level which could result in some or all of the following conditions:

1. Low coolant light flashes during acceleration.

2. Temperature gage needle indicates high engine temperature.

3. No coolant flow from the reservoir bottle to the radiator.

This condition may be caused by air trapped in the coolant system, preventing proper system fill, and/or a damaged seal surface of the coolant filler cap assembly.

To repair this condition perform the following:

1. Review engine cooling and radiator service procedure as detailed in Section 6B of the Service Information Manual.

2. Perform burp procedure as outlined in Section 6B of the Service Information Manual.

3. Inspect the filler cap sealing surface on the coolant filler neck assembly for damage or distortion, refer to Figure 1. If damaged or distorted, replace the coolant filler neck assembly.

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.