Add it to the low presser side. It will be located on the evaporator on the fire wall on the passenger side of vehicle.
Using the proper type of freon and a gauge, connect to the low side ac port. With the engine running and the ac on high, add freon till the gauge shows full.
You add freon to the a/c by using the low side, suction side (larger hose).............
R134a
If that is all that you want to do then just add it on the low side service port that is located on the a/c accumulator...................
The 1996 Suburban uses r134 Freon. The fittings to add Freon are different sizes on r12 and r134, making it impossible to add the wrong type to your vehicle.
To add Freon to a 1982 Toyota pickup, locate the low-pressure service port on the air conditioning system. This port is typically found on the larger diameter aluminum line that runs from the compressor to the evaporator. Remove the cap from the port, attach the refrigerant recharge hose, and follow the instructions on the refrigerant can to add Freon. Always ensure the engine is running and the A/C is set to the maximum cool setting while adding Freon.
Freon was not installed in any vehicle built after 1995.Freon was not installed in any vehicle built after 1995.
Low pressure line - larger line from A/C compressor
To the transmission. Down the dipstick tube.
To add freon to the air conditioner on a 1989 Toyota SR5 Pickup, locate the low-pressure service port, which is typically found on the larger diameter aluminum line running from the compressor to the evaporator. Remove the cap from the service port and connect the refrigerant can's hose to it. Make sure the engine is running and the AC is set to the maximum setting while you add freon. Always check the manufacturer's specifications for the correct type and amount of refrigerant.
Low pressure line Larger line running from compressor
Buy a kit at Wal-Mart or auto parts comes with instructions