R12-if it has ac of course.
YesYes
stuttering???? add more detail to your question
The low side port, which is the smaller one.
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.
Low pressure side-- larger hose from compressor
there should be a white sticker on the underside of the hood that tells you how much a full charge is. If you are adding freon, it is best to get it sucked down to vacuum and then add a full charge. The a/c works best when the exact right amount is in there, not too much, not too little.
In the low side ac service port.
freon usually goes on your condinser there should be a place to add collant on your condinser which is a silver cylinder
You add it at the same place you check it, unless it is a sealed for life unit.
System does not contain Freon. R134a refrigerant is added through the low side service port on the accumulator.
Buy a kit at auto parts or Wal-Mart comes with instructions
go to the court house and apply for a duplicate title