We located the drain but how do you unclog it?

 

Compressed air or a piece of weedeater line.

 

hi I have a 2009 HHR my AC is working fine but my only problem is that on my passenger side there's water leaking down from my dashboard on the passenger side onto the foot How can I locate the drain to unclog it where is it located at

 

This thread has the information you need to find it. The post you quoted even has a picture.

Not sure what else we can tell you. Under the hood on the firewall, passenger side.