What kind of freeon does a 1993 Chevy S10 Pickup for Air conditioner?

A 1993 Chevy S10 pickup truck used R-12 (Freon 12) refrigerant in its air conditioning system. However, R-12 is no longer manufactured due to its ozone-depleting properties. If the system needs to be recharged, it must be converted to use a compatible refrigerant like R-134a and the system components may need to be modified or replaced to ensure proper compatibility and functionality. Do not attempt to add R-12. You must use a proper R-134a conversion kit and have a qualified technician perform the work.