COOLANT SENSOR REPLACEMENT KIT CCC SYSTEM - CODE 15

VEHICLES AFFECTED: ALL 1980-84 GM VEHICLES WITH COMPUTER COMMAND CONTROL

Many coolant sensors have been replaced on 1980 to 1984 vehicles as a result of a "Check Engine" light and Code 15. In many cases, the sensor was not defective, and the real cause was a poor connection between the sensor and the wire harness connector.

An improved coolant sensor and connector kit, P/N 10045847, containing all necessary parts, has been released for all 1980-84 GM vehicles using Computer Command Control. This sensor is used to provide coolant temperature information to the Electronic Control Module (ECM). Separate sensors are used for gage or warning light operation, or to activate the electric cooling fan, and are not affected.

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.