2006 CHEVROLET AVALANCHE 1500 Tires Problems

TL*THE CONTACT OWNS A 2006 CHEVROLET AVALANCHE 1500. THE VEHICLE HAD FIRESTONE WILDERNESS LE TIRES WHEN THE VEHICLE WAS PURCHASED.. THE VEHICLE WAS TAKEN TO THE DEALER TO HAVE THE TIRES ROTATED. AFTER THE ROTATION, WHILE DRIVING APPROXIMATELY 40-50 MPH, THE CONTACT HEARD A THUMPING SOUND COMING FROM THE VEHICLE. THE VEHICLE WAS DRIVEN BACK TO THE DEALER AND THE FAILURE WAS REPAIRED. SHE WAS NEVER VERBALLY INFORMED OF THE CAUSE OF THE FAILURE; HOWEVER, THE INVOICE STATED THAT THE TIRE WEAR WAS CAUSED BY THE ALIGNMENT. THE INVOICE ALSO STATED THAT THE NEGATIVE CAMBER WAS VERY CLOSE TO THE OUTER LIMIT, WHICH WOULD STILL CAUSE TIRE WEAR. APPROXIMATELY A MONTH LATER, THE THUMPING NOISE RETURNED AND CURRENTLY PERSISTS. THE DEALER WAS NOTIFIED OF THE PERSISTING THUMPING SOUND AND THEY REPLACED ONE TIRE THAT WAS WORN; HOWEVER, THE FAILURE CONTINUED. THE MANUFACTURER STATED THAT THEY WERE NOT LIABLE FOR THE...