MY 2004 TRAILBLAZER KICKED INTO FULL SPEED WHILE I WAS TRAVELING IN AN ICY ROAD AT 20 MPH. IT AUTOMATICALLY SWITCHED TO 4 WHEEL DRIVE, SPUN AT A 90 DEG. WENT INTO A DEEP DITCH, SPUN BACK STRAIGHT AND HEADED UP THE DITCH, AGAIN FULL SPEED, INTO A CULVERT AND TOTALED THE VEHICLE. BOTH AIR BAG SENSORS WERE KNOCKED OFF THE VEHICLE AND NEITHER ONE OPENED. I WAS NOT INJURED. SHOOK UP A LITTLE. TRAVELING ALONE AND COMING HOME FROM CHURCH ON A SUNDAY MORNING AT NOON. *TR