How easy is it to replace a/c refrigerant on 2003 grand prix

[reen910]

I flipped on my a/c today and the blower is blowing warm air. I can hear the compressor click on, but no cold air. I'm thinking the refrigerant needs to be re-charged. I believe it is R-134a. Am I correct? How hard is it to get to the valve to recharge it in a 2003 Grand Prix SE?

Thanks

[GTP Dad]

It is R-134A. Recharging it is not hard but it would be a good idea to find out if you have a leak or not. I would get one of the cans of R134 that has the gauge so you can be certain that you need a charge. You will need to connect it at the low pressure port and run the car while you put the charge into the system. If you find you have a fully charged system then take it to a shop for diagnosis as you may have other issues.

[reen910]

Can you direct me to the low pressure port?

[doctorhrdware]

If you do not know what you are doing then I would not try to do anything. You can be injured by connecting the can of freon to the wrong port.

[brcidd]

It's the only one the valve will fit- up by the firewall- with the blue cap on it....It is on the aluminum pipe that exits the evap at the firewall..

[doctorhrdware]

On my GP it has black caps on the service ports.

[reen910]

Thanks for the help. I found blow by blow instructions on interdynamics site, so I am going to get teh ez R-134a can and try it tonight. If that doesn't fix it, i will take it in.