So I've searched and can't find an answer to fix this. I'm new to the forum and owning a chevy always bought dodge. I just picked up a 2005 chevy tahoe lt with autoride and with the bose system. When I got it the dealer had just put a brand new battery in it and now the stereo is locked. I've tried the 20 million different button combinations people online have said to try. Only one that works when the tahoe is off is if I hold down 5 and seek then hit the power button but as soon as I go to turn the tahoe on the stereo locks again. I really don't wanna pay a bunch of money to a dealer to reprogram the stereo.