Simple question about ac ports... Hopefully

I have a 93 lumina it is a flex fuel one was trying to locate the ac service ports and all i can find are two lines running from condenser to evap can and radiator... I just need to know we're do i fill the system at i've done it in other cars so i know what they look like but just can't find them

I have the same question, only mine's a 97 Lumina. I can find one tucked away behind the battery and below the air filter. But I think it's the high side, the charger fitting won't fit on it.

Just wanted to say I found them and for you romeguy if yours is like mine you can see one from the top and one if you look up from under the car in the same area and thank you for your post it is what made me look there in the first place

The low pressure side is larger and close to the compressor.