What type of refrigerant is required in a 1997 Chevrolet Silverado?

A 1997 Chevrolet Silverado likely used R134a refrigerant in its air conditioning system. However, it's crucial to verify this with your vehicle's owner's manual or a qualified mechanic. While R134a was very common in vehicles of that era, there's a small chance of a different refrigerant depending on the specific options and regional variations. Never assume; always check the documentation or consult a professional.