OUR 2016 ESCALADE WITH 20,000 MILES HAD THE TAIL PIPE CORRODE AND FALL OF THE VEHICLE. THE REAR BUMPER WAS SUBJECT TO EXCESSIVE EXHAUST HEAT WHICH SUBSEQUENTLY MELTED THE BUMPER AND BACK-UP SENSORS. IF THE ISSUE WASN'T NOTICED, A MAJOR THERMAL EVENT COULD HAVE OCCURRED AND THE TRUCK COULD HAVE BEEN A TOTAL LOSS. CADILLAC HAS REFUSED TO WARRANTY THIS ISSUE. WE ALSO HAVE A 2019 ESCALADE THAT IS SHOWING SIGNIFICANT SIGNS OF CORROSION AT THE SAME WELD. I BELIEVE THIS IS 100% A DESIGN ISSUE. THE SERVICE DEALER, AUTONATION IN PALM BEACH, FL TOLD ME THAT THEY WOULDN'T WARRANTY BECAUSE I ASKED THEM TO INSTALL THE CADILLAC OPTIONAL UPGRADE EXHAUST, NOT WOULD THEY COVER ANY OF THE MELTED COMPONENTS DUE TO THE INFERIOR TAIL PIPE DESIGN. I HAVE PHOTOS OF THE 2016 EXHAUST UPON FAILURE AND THE 2019 WITH THE START OF CORROSION THAT I CAN EMAIL DIRECTLY.