A/C SYSTEM FREON LEAK INSTALL LARGER O-RING

MODEL AND YEAR: 1987 CAVALIER WITH L-4 OR V-6 ENGINE AND AIR CONDITIONING

In the event the air conditioning system looses its freon, it is extremely likely that the cause will be the "O" ring seal at the pressure switch.

Models equipped with L-4 engines have a high pressure switch located in the back of the compressor.

Models equipped with V-6 engines use two switches, a high pressure one and a low pressure one. Both switches are located in the high pressure line near the block fitting at the condensor.

Prior to charging the system to perform a leak test on a discharged system, replace the "O" ring on the one or both switches with one that is slightly larger, P/N 3093509.

This "O" ring should be used whenever the switches require service.

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.