So i could driving my 2005 trailblazer then suddenly my 4x4 will turn on by itself and now its on and it won't turn back to 2lo i think. What can i do and the worst part is that im in germany and i think there is not a chevy dealer ship around here.

 

My trailblazer does that as well.....there is a known problem in the 4X4 switch. Whenevr mine does it, i move the switch up to 4lo all the way back down to 2hi and it always switches back for me

 

the problem is the switch broke off and it got misplaced.