Sometimes when I get out of my truck the stereo stays on even after I ahve removed the keys and opened the door. I have an Alpine deck hooked up through a GM Data-bus adapter (from Crutchfield - I forgot the brand) so that my RAP would still function. To turn off the deck when this happens I have to put the key back in the ignition and turn it to aux and then back off. It happens rarely but it is annoying nonetheless. Has anyone else had this problem? Thoughts? Thanks.