ENGINE OVERHEAT INDICATION INFORMATION

Comments have been received of vehicles with gage packages and air conditioning indicating high engine coolant temperature after the engine has run only a few minutes. This can be corrected by installing a coolant shut off valve (part number 14044414) (Figure 1).

This new valve has the same function as the existing valve. (Figure 2.) The difference is that in the closed position, the new valve recirculates coolant back to the engine instead of dead heading the engine out line. There are two (2) sets of valve inlet and outlet ports. One set is for the engine out line (similar to the current valve hook up). The other set of ports are installed in the engine return line by cutting the hose. Two (2) clamps, 14052374, are required.

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.