2016 GMC SIERRA 3500 Suspension Problems

TL* THE CONTACT OWNS A 2016 GMC SIERRA 3500. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 55 MPH OR MORE, THE VEHICLE EXPERIENCED THE DEATH WOBBLE. THE CONTACT STATED THE TRANSMISSION FAILURE WARNING LIGHT ILLUMINATED WITH A MESSAGE STATING THAT IN APPROXIMATELY 60 MILES THE VEHICLE WOULD SHUT OFF. THE CONTACT TOOK THE VEHICLE TO THE DEALER (BURTENESS CHEVROLET BUICK GMC OF WHITEWATER LOCATED AT 1389 W MAIN ST, WHITEWATER, WI 53190 PHONE NUMBER 262-456-6849) TO BE REPAIRED. THE VEHICLE WAS REPAIRED HOWEVER, THE CONTACT WAS NOT INFORMED OF WHAT REPAIR WAS PROVIDED. THE FAILURE PERSISTED. THE APPROXIMATE FAILURE MILEAGE WAS 120,000.