GM Service Manual Online
For 1990-2009 cars only

Caution: Avoid breathing the A/C Refrigerant 134a (R-134a) and the lubricant vapor or the mist. Exposure may irritate the eyes, nose, and throat. Work in a well ventilated area. In order to remove R-134a from the A/C system, use service equipment that is certified to meet the requirements of SAE J 2210 (R-134a recycling equipment). If an accidental system discharge occurs, ventilate the work area before continuing service. Additional health and safety information may be obtained from the refrigerant and lubricant manufacturers.

Important: 

   • Use only the approved lubricant for the R-134a system and the R-134a components. If lubricants other than those specified are used, compressor failure may occur. Coat all of the fittings and the O-ring seals with a clean approved refrigerant oil. This action will provide a leak-proof seal and to aid in assembly and disassembly.
   • Do not store or heat the refrigerant containers above 125°F (52°C).
   • Do not heat a refrigerant container with an open flame. If the container must be warmed, place the bottom of the container in a pail of warm water.
   • Do not drop, puncture, or incinerate the refrigerant containers.
   • Refrigerant will displace oxygen. Work in well-ventilated areas in order to prevent suffocation.
   • Do not introduce compressed air to any refrigerant container or refrigerant component. The action may cause the contamination of the refrigerant.
   • If it is necessary to carry a container of Dot CFR Refrigerant-134a in a vehicle, do not carry it in the passenger compartment.