I have a 2004 with the plain OEM cd player. The truck has been sitting a while and now when I start it the stereo goes all wacky with crazy symbols and such. I had a battery boil over a few months ago due to a poor connection. That's fixed but now the radio is jacked. AC switch has been jacked for a while now too. Bounces between low fan and whatever I have it set on. Any ideas?