Where do you add freon to a 1999 suzuki grand vitara?

To add freon to a 1999 Suzuki Grand Vitara, locate the low-pressure service port, which is typically found on the larger diameter aluminum tubing between the compressor and the evaporator. The port is usually covered by a plastic cap that you can remove. Once located, connect the refrigerant canister to the port and follow the instructions on the can for proper charging. Always make sure the air conditioning system is off before connecting the refrigerant.