you must take in to a certifed ASE mechanic as it is illegal to do it if you are not certifed
That is an out and out lie! If you can prove it I will apologize. I believe you should research the law and you will find out that anyone can change their freon, R-134a is available at most parts stores and in stores like Wal-mart, if it were illegal it would not be available to the general public.
To answer the question, find the low pressure port and while running the engine put the freon in till the gage say it is good makesure you have the A/C on max...
Buy a kit at wal-Mart or auto parts comes with instructions
where do I add freon to my air conditioning unit on a 1997 chevy truck?
System does not contain Freon. R134a refrigerant is added through the low side service port on the accumulator.
Contains no Freon. Freon was banned beginning in 1996.
YesYes
Down the dipstick tube.
In the plastic bottle on the inner fender.
R12-if it has ac of course.
dip stick tube
You add it down the dipstick tube.
Low pressure side-- larger hose from compressor
Buy a kit at auto parts or Wal-Mart comes with instructions