2012 GMC SIERRA DENALI Structurebody Problems

OUR GMC HAS EXPERIENCED 3 EXTERIOR DOOR HANDLE FAILURES. WE PAID TO HAVE THE 1ST BROKEN HANDLE REPAIRED AS IT WAS NOT OPERABLE FROM THE OUTSIDE. THIS MAKES FOR A DANGEROUS EVACUATION EXPERIENCE IN THE EVENT OF AN EMERGENCY. WE CHOSE A NON-DEALER REPAIR FACILITY DUE TO THE COST OF USING A DEALER. THIS REPAIR HAS HELD UP WELL. SINCE THAT INITIAL REPAIR 2 MORE EXTERIOR HANDLES HAVE BECOME INOPERABLE. IT'S ONLY A MATTER OF TIME BEFORE THE 4TH AND FINAL HANDLE FAILS. THIS VEHICLE IS NO LONGER UNDER WARRANTY. HOWEVER, IT'S ONLY VERY LIGHTLY USED AND HAS LESS THAN 60K MILES ON IT. A 75% DOOR HANDLE FAILURE RATE IS UNACCEPTABLE BY ANYONE'S STANDARD. DUE TO THE COST OF THE REPAIRS WE HAVE NOT BEEN ABLE TO FIX THESE REMAINING 2 DEFECTIVE HANDLES. GMC, BBB AND NORTH COUNTY GMC IN ESCONDIDO, CA HAVE BEEN OF NO ASSISTANCE. WE ARE...