My 2005 Trailblazer's ignition switch is stuck in the LOCK position. The interior lights come on when I open the doors & the keyless remote works fine. I can insert the key & remove it. The ignition switch will not budge. I have disconnected/reconnected the battery. The door chimes when I open the door with or w/out the key in the switch. Is some kinda anti-theft turned on? I have read the manual & trolled the internet all day. Just not sure if this is a bad switch or anti-theft control...or something else? Thanks for any help.