VEHICLE'S AUTOMATIC DOOR LOCKS BEGAN TO ENGAGE AND DISENGAGE ON THEIR OWN, POSSIBLY LOCKING THE STEERING COLUMN AS VEHICLE ENTERED INTO A CURVE. CAUSED DRIVER TO LOOSE CONTROL GO INTO DITCH, BOUNCE OUT OF DITCH AND LOG ROLL THE VEHICLE. AIR BAGS DID NOT DEPLOY. DOOR LOCKS WERE STILL GOING UP AND DOWN SEVERAL HOURS LATER AT THE VEHICLE IMPOUND YARD AND WAS OBSERVED BY THE POLICE OFFICER AND NOTED IN HIS REPORT. ADDITIONAL. THIS PROBLEM IS MUCH BIGGER THAN BELIEVED! I HAVE A 2011 HHR AND HAVE HAD THE IGNITION SWITCH TURN OFF WHEN I HAVE DROPPED THE ADJUSTABLE STEERING COLUMN TO THE DOWN POSITION WHILE MOVING. I HAVE A HEAVY KEYRING AND WHEN I BROUGHT IT UP TO THE DEALERSHIP THEY TOLD ME THE KEYRING WAS THE PROBLEM. MY OTHER DAUGHTER'S 05 IMPALA HAD THE SAME PROBLEM WHEN SHE HIT A BUMP. *TR