2008 HUMMER H3 Steering Problems

THE ENGINE COMPLETELY SHUT OFF WHILE DRIVING ON A MAJOR HIGHWAY. THE STEERING WHEEL LOCKED UP AND THE CAR CAME TO A STOP. LUCKILY, EACH TIME THIS OCCURRED, I WAS ABLE TO PULL OVER TO THE SHOULDER. THERE WERE NO ERROR LIGHTS THAT CAME UP ON BOTH OCCASIONS OF THIS HAPPENING. THE BATTERY CONTINUE TO DIE, EVEN AFTER BEING REPLACED THREE TIMES IN 6 MONTHS!

TL* THE CONTACT OWNS A 2008 HUMMER H3. UPON STARTING THE VEHICLE, THE STEERING WHEEL WOULD INADVERTENTLY MOVE TO THE LEFT AND RIGHT WITHOUT WARNING. THE VEHICLE WAS NOT TAKEN TO A DEALER FOR DIAGNOSTIC TESTING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DETERMINED THAT THE FAILURE WAS DUE TO THE UPPER STEERING SHAFT AND A BUSHING THAT NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 143,000.

I HAVE A 2008 HUMMER H-3. ON NOVEMBER 3RD 2009 WHILE DRIVING ABOUT 30 MILES AN HOUR ON A SHARP LEFT CURVE, THERE WAS A LOUD CLUNK IN THE FRONT END AND THE TRUCK PULLED HARD TO THE RIGHT MAKING THE VEHICLE GO DOWN INTO THE DITCH. SEVERAL WEEK BEFORE THIS INCIDENT WHILE IN A PARKING LOT MAKING A SHARP LEFT TURN( LESS THAN A MILE PER HOUR) THERE WAS A REAL LOUD CLUNK IN THE FRONT PASSENGERS SIDE, THIS HAPPEN TWICE INCLUDING A WEEK BEFORE THE FAILURE. WHEN I CHECKED UNDER THE FRONT END I DID NOT SEE ANYTHING. THE VEHICLE WAS TAKEN TO THE HUMMER DEALER BUT THEY COULD NOT TELL IF ANYTHING FAILED. SOMETHING FAILED! THIS CAUSES ME GREAT CONCERN BECAUSE IF IT HAPPENED ON A MAIN HIGHWAY AND THE VEHICLE WENT INTO TRAFFIC, THAT WOULD NOT HAVE BEEN GOOD. PLEASE HELP ME FIND OUT WHAT WENT...