AC lines unhooked 03 gt
 

Just bought a 03 gt and found that the ac lines were unhooked and in the trunk along with the canister that mounts to the firewall. I don't see any other parts missing. Do I just hook them back up and charge or is this going to be complicated?

I would suggest flushing them out before and after you hook them up. If something got in the system it can destroy the compressor.

What would u suggest flushing the system with? Will water work? I know nothing about ac systems.

If you have to ask you are better off having someone who knows what they are doing put it back together. You will need specialty tools as in, manifold gauges and a vacuum pump.