SERVICE MANUAL UPDATE-SEC.1D A/C COMPRESSOR OVERHAUL

SUBJECT: AIR CONDITIONING COMPRESSOR OVERHAUL

Refer to Air Conditioning Compressor Overhaul (Section 1 D) in the 1991 GEO Storm Service Manual (ST371-91) when performing air conditioning compressor overhaul procedures on 1990 GEO Storms.

Whenever performing service procedures on the GEO Storm air conditioning system, DO NOT use standard 525 viscosity refrigerant oil. The rotary vane compressor used in the Storm A/C system uses a paraffin-based oil GM part #12345762.

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.