Where is the high and low a/c service ports on a '97 Pontiac Grand AM (I need to...

[Ben]

...add Freon)?
Yeah, I know to use the low pressure pipe, I want to know WHERE it is on my car.

 

[jumbobret]

The high side is the smaller of the A/C lines. DO NOT try and put freon in the high side the can may blow up due to the extreme pressure of the high side. jb

 

[jumbobret]

The high side is the smaller of the A/C lines. DO NOT try and put freon in the high side the can may blow up due to the extreme pressure of the high side. jb