One problem related to air bag on-off switch has been reported for the 2007 Chevrolet Trailblazer. The most recently reported issues are listed below.
I can smell as if something burning, on different occasion. The headlights would ramdomly shut off, while driving. I would switch to high beam in order to see. The back hatch window, locks when it wants to. The airbag indacator lights come on and stay on awhile. The vehicle will stall and then accelerate at times. The tire pressure lights, does not come on when pressure is low. The check engine light comes on, and stay on awhile, and then goes off, and comes back on. The climate control heater system blows cold air. At one time the key would not come out of the ignition. Had to continue to giggle the key to get it out of ignition. Noticed my headlights did not come on when I used the remote entry to unlock or lock the door. The windows stall when going up or down. I have contacted gm , but they are telling me that my make,model and year are not part of the current recall. And that the letter they sent me, was to purchase warrenty for the vehicle. I feel that this vehicle is not safe due to this electrical problems.