You can add Freon to your 2001 Buick Century air conditioning system through the low pressure port. The low pressure port can be found on the top of the air conditioner compressor.
Where_do_you_add_freon_on_a_2000_buick_regal
How do I put freon in a 2002 Cadillac deville
how can I add transmission fuel in my 2003 buick century
Take it to the a auot shop. you can not add freon
on the low side only
You add the refrigerant through the low side service port.
You add refrigerant at the low pressure port but you do not add Freon. You add R134/134a. If you are having to add refrigerant then you have a leak that needs to be repaired first.
It is either on or near the recievr dryer in the right rear of the engine compartment. To corrrectly add freon, you need gauges and a refrigerant recovery system
Everything takes a different form of Freon. Drain the system if it has not been so prior then add R134a Freon into the coolant system.
add antifreeze
At the power steering reservoir.