Hey guys, I have a 06 GP GXP with factory navigation and xm radio. Since the spring is here I'm driving my car more often and want to figure out what all the buttons for the navigation and sound system do. The car came with a manual but that stereo option isn't listed. I don't know what half the buttons do or how to use the navigation to its full extent. Is it trial and error or is there an actual manual for this thing? Cause I can't seem to find one! Help pls!