DURING A U-TURN, ON A 4-LANE STREET THE POWER STEERING AND BRAKES STOPPED WORKING. I WASN'T ABLE TO STEER OR STOP. THE STEERING BECAME VERY HARD AS WELL AS THE BRAKE PEDAL. THE CADILLAC DEALER SUGGESTED IT WAS THE POWER STEERING PUMP AND CHANGED IT UNDER MY WARRANTY. I PICKED THE CAR UP 1 WEEK LATER AFTER BEING TOLD THAT MY CAR WAS FIXED. AFTER LEAVING THE DEALER, I STOPPED AT A TRAFFIC LIGHT AND MY BREAK PEDAL BEGAN VIBRATING AND AGAIN I WAS NOT ABLE TO STEER THE CAR. I TOOK THE CAR BACK TO THE DEALER AND ALLOWED HIM TO TALK ME INTO KEEPING THE CAR FOR THE WEEKEND (IT WAS A FRIDAY AND NO MECHANICS WORKED THE WEEKEND). AGAIN I LEFT THE DEALER AND CAREFULLY ATTEMPTED TO DRIVE THE CAR HOME. I WAS STOPPED BEHIND A CAR MAKING A LEFT TURN AND AS I ATTEMPTED TO REMOVE MYSELF FROM BEHIND THE CAR BY CHANGING LANES, I REALIZED THAT THE CAR WILL NOT TURN UNLESS MOVING. I WENT BACK TO THE DEALER AND DEMANDED THAT THEY KEEP THE CAR UNTIL FIXED. ONE WEEK LATER (THE FOLLOWING FRIDAY) I WAS CALLED TO PICK UP MY CAR AGAIN. I WAS TOLD THAT THE NEW POWER STEERING PUMP WAS BAD AND THEY HAD REPLACED IT WITH ANOTHER NEW ONE. THIS TIME THE STEERING WHEEL WAS JERKY, AND THE BRAKES VIBRATED A LITTLE LESS THAN BEFORE. IN ADDITION, THE BATTERY LIGHT WAS BLINKING ON AND OFF AND THE CHARGE WAS AT APPX. 9 VOLTS. I LEFT THE CAR AGAIN. THE NEXT FRIDAY I PICKED UP MY CAR AND WAS ABLE TO DRIVE IT FOR ABOUT A WEEK AND A HALF ALL THE WHILE KNOWING THAT IT STILL WASN'T RIGHT. THIS TIME THE STEERING WAS LESS JERKY (BUT JERKY NEVERTHELESS) WHILE APPLYING THE BRAKE, THE FRONT END WAS CLUMPING WHEN I WENT OVER BUMPS, THERE WAS WAY TOO MUCH PLAY IN THE STEERING WHEEL, AND THE CAR IS WHISTLING WHILE DRIVING AND IDLING. I TOOK THE CAR BACK ON THURSDAY, JULY 6, 2006, THE SERVICE WRITER DROVE IT AND INSTRUCTED ME TO BRING IT BACK ON MONDAY. AT THIS TIME, MY CAR IS NOT FIXED. THE CONDITION OF MY CAR HAS BECOME SUBSTANTIALLY WORSE EACH TIME I PICKED UP THE CAR. *NM