Under the air filter compartment.
recharge gauge shows pressure of 70 psi
The AC recharge valve on a 2001 Chevy Impala 3.4L V6 is near the firewall. It is the larger of the two tubing.
That would be the low pressure service port and it should be located on the receiver/dryer.
The low side pressure port for the 1999 Monte Carlo should be on a pipe against the firewall. It is just to the left of the Dipstick.
on the low pressure side
Its located on the top of the a/c compressor..................
Its located on the accumulator...................
The one that is in the biggest line, You have a small line and a big line. The big line is the low side, and the small line is the high side.
Yes, if you recharge it on the high side, you could blow up the can using to recharge it. So it is very important to use the low side.
Recharging the air conditioning is simple with a recharge kit. Connects the Freon bottle to the recharge port on the air conditioner compressor. Release the Freon into the compressor.
Your AC system probably needs a recharge. AC units in cars need regular servicing too - about every couple years is adequate.