Refrigerant
Need a step-by-step guide?
Get an AI-powered repair guide with parts lists, cost estimates, and clear instructions for your 1999 Buick.
Refrigerant Type R-134a
Important
Do not mix R-12 refrigerant and R-134a refrigerant, even in the smallest amounts. R12 and R-134a are incompatible with each other. If the refrigerants are mixed, compressor failure is likely to occur.