How do you recharge the ac on a 2003 Monte Carlo?

To recharge the AC on a 2003 Monte Carlo, first, locate the low-pressure service port, which is typically found on the larger diameter aluminum line. Connect a refrigerant recharge kit to this port, ensuring the can is upright. Start the engine and turn the AC to the maximum setting. Open the valve on the refrigerant can and monitor the pressure gauge, adding refrigerant until the system reaches the recommended pressure level.