GM Service Manual Online
For 1990-2009 cars only

Caution: Avoid breathing A/C Refrigerant-134a and lubricant vapor and mist. Exposure may irritate eyes, nose and throat. To remove R-134a from the A/C system, use service equipment certified to meet the requirements of SAE J2210 (R-134a recycling equipment). If accidental system discharge occurs, ventilate work area before resuming service. Additional health and safety information may be obtained from refrigerant and lubricant manufacturers.

Important: 

   • Do not mix R-12 and R-134a. R-12 and R-134a are incompatible with each other. If the refrigerants are mixed, A/C compressor failure is likely to occur.
   • Use only the specified lubricant (PAG) for the R-134a A/C system and the R-134a components. If lubricants other than those specified are used, A/C compressor failure may occur. Coat all of the fittings and the O-ring seals with a clean 525 viscosity 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 intentionally 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 R-134a in a vehicle, do not carry it in the passenger compartment.

All R-134a disposable (blue) containers are shipped with a heavy metal screw cap. The screw cap protects the valve and the safety plug of the container from damage. Replace the cap after each use of the container in order to continue protection.