WhatAmount of freon in 1993 Chevrolet truck?

The amount of freon (R-12) in a 1993 Chevrolet truck's air conditioning system varied depending on the model and the size of the system. There's no single answer. You will need to consult your truck's owner's manual. That manual will specify the correct refrigerant charge amount.

Even if you don't have the manual, you can often find a digital version online by searching for "[your truck's specific model and year] owner's manual". Be sure to get the correct model as different trims (e.g., C1500, C2500, K1500, etc.) will have different capacities.

Important Note: R-12 is no longer produced due to its ozone-depleting properties. If your system needs to be serviced, it will require a conversion to a compatible refrigerant (like R-134a) and the system may need some modifications to handle the new refrigerant properly. This is best done by a qualified technician.