A 1998 Chevy Camaro uses R134a.
A 1976 Chevy camaro
It came from the factory charged with R12 Freon. As this refrigerant is extremely expensive and hard to find, I suggest you convert it over to R134 Refrigerant.
Chevy Camaro
You should have this verified but the freon is probably HFC134.
134a
R134a
R134a
R134a
R-134A
R134a
R134a