Does a 1993 Buick Park Avenue have R-12 0r R34A AC fluid?

A 1993 Buick Park Avenue used R-12 refrigerant. R-134a is not compatible with R-12 systems. If the AC system needs service, it will require a conversion to R-134a or the use of an R-12 substitute, as R-12 is no longer legally manufactured in many countries due to its ozone-depleting properties.