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.

Notice: R-134a refrigerant is not compatible with R-12 refrigerant in an air conditioning system. R-12 in a R-134a system will cause A/C compressor failure, refrigerant oil sludge, or poor air conditioning system performance.

Refrigerant performs the following functions in the air conditioning system:

These vehicles use A/C Refrigerant-134a (R-134a). R-134a is a nontoxic, nonflammable, clear, colorless liquefied gas.

Important: Polyalkaline Glycol PAG refrigerant oil distributed by General Motors is manufactured with blue coloring. If the color of PAG oil changes to any color other than blue during storage, replace the oil. PAG oil that is no longer blue has absorbed moisture and cannot be used.

R-134a carries a special lubricant called Polyalkaline Glycol PAG refrigerant oil. GM PAG refrigerant oil will have a slight blue tint. The oil is hygroscopic (absorbs water from the atmosphere). Store GM PAG refrigerant oil in closed containers.