A 1991 Chevy typically uses R-12 refrigerant for its air conditioning system. However, many older vehicles have been retrofitted to use R-134a, which is a more environmentally friendly option. It's important to check the specific model and any modifications that may have been made to determine the correct refrigerant. Always ensure proper recovery and handling of refrigerants to comply with environmental regulations.
R134a
R-12 from factory Should be converted to R134
r 12 its no longer available so a conversion kit and system flush are needed. $100
r134
R134a
most likely it is freon. your best bet is to convert it over to 134 a
Freon is R12. Your 1997 Chevy uses R134 Refrigerant.
R134
r-134a
r 134a
R-134 should be the refrigerant as R12 was banned in 1996.
It takes r134a refrigerant.