For 1990-2009 cars

Notice: Use only Polyalkylene Glycol Synthetic Refrigerant Oil (PAG) for internal circulation through the R-134a A/C system and only 525 viscosity mineral oil on fitting threads and O-rings. If lubricants other than those specified are used, compressor failure and/or fitting seizure may result.

The following information should be used to service the air conditioning (A/C) system:

• | A/C system internal lubricant (including compressor) use GM P/N 12345923 or equivalent.

• | A/C system O-ring and fitting lubricant use GM P/N 12301108 or equivalent.