NHTSA Complaint #10322765 — 2007 CHEVROLET IMPALA

I PURCHISED THIS CAR IN APRIL OF '08 AND IT HAS BEEN FAILING SINCE I BOUGHT IT. THERE IS A VIBRATION WHILE RIDING IN THE CAR THAT MAKES YOUR BODY BOUNCE. THE DEALER STATES THEY DON'T FEEL IT, BUT I HAVE CRONIC BACK PAIN FROM IT. I HAVE HAD IT AT THE DEALER SEVERAL TIMES AND NO FIX. I TOOK IT TO AN ALINEMENT SHOP THEY TOLD ME THAT THE STUTS WERE SET OUT FROM THE FACTORY SO THE TIRES DON'T HIT THE GROND FLAT LIKE THEY SHOULD. THE PROBLEM CAUSES MY TIRES TO SLIP OUT OF BALANCE CONSTANTLY MAKING THE VIBRATION WORSE. MY WINDSHIELD AND DASH BOTH MAKE CRAKING NOISES NOW FROM ALL THE VIBRATION IN THE CAR. IT MAKES FOR A VERY UNCOMFORTABLE RIDE. I AM ON MY 3RD SET OF TIRES AT 28.300. THE BRAKES DON'T WORK PROPERLY, THE DEALER HAS TURNED THE ROTORS TWICE FOR WARPING. NOW THEY ARE GROOVED AND THEY TELL ME THAT "IT'S NORMAL" AND I DON'T HAVE THE NORMAL STOPING POWER I SHOULD. THE POWER STERING SQUIELS, BUT THEY CAN'T HEAR IT. THE FRONT END HAS A BANGING NOISE WHEN GOING OVER BUMPS,"THEY DON'T HEAR",BUT I CAN FEEL IT IN THE FLOOR BOARD WHEN IT HAPPENS. THE CAR IS SLUGGISH WHEN EXCELERATING,"NO PROBLEM FOUND". THE FUEL ECONEMY HAS DECREASED AS WELL. WHILE ON AN INCLINE THE CAR ROLES BACKWARD LIKE A STANDARD,"IT'S NORMAL" I HAVE NEVER HAD A CAR DO THAT WITHOUT THE TRANY BEING BAD. WHEN STOPED AT A LIGHT THE TRANY TAKES A COUPLE OF SECONDS TO REENGAGE FOR TAKE OFF. TPS REPEATED PROBLEMS NOT WORKING POPERLY. THE CARS HANDLING IS VERY POOR IN THE RAIN,SNOW,OR ICE. THE MUFFLER SYSTEM HAS A LEAK AS WELL.