There's a guy on another corvette forum that has developed a new harness to allow for a very fast and simple installation of an iPod along with the new GM PAL. (Personal Audio Link) His name is Ray Kawal and here are two links to check it out for yourself. I've ordered one of his harnesses and will be doing the installation soon. He is charging 35.00 plus 5.00 for shipping. His website details the install, which takes about 5-10 minutes total and you don't have to remove your center console. Check it out...
http://www.kawal.net/ipod.htm
http://www.kawal.net/PAL%20install.htm

I had the PAL installed today using the new harness I mentioned in the previous post. It literally took all of 10 minutes and works great. The factory nav screen is usable now for the iPod, which the previous PA11-Vette did not do. It also now displays the song title in the HUD.