NHTSA Complaint #11468751 — 2015 GMC TERRAIN

November 18,2021: Driving vehicle on the freeway 70mph, for 1.5 hours,then exit to a main street within speed limit during rush hour traffic. Parked the vehicle for 2.5 hours in a parking lot, returned to vehicle, turned onto street drove about 2 miles,30mph. The vehicle made a sound as if metal was being dragged, I tried to align the wheels but it was difficult. I turned on the emergency flashers & struggled to pull into a gas station parking lot,looked underneath the vehicle but saw nothing. The 2015 GMC Terrain AWD (less than 80,000miles) had to be towed to the GMC Dealership. November 19, 2021 service rep stated that the transfer case was damaged. Something broke a loose inside the case & caused damage, there are metal shavings visible. Cost for part, $2200 My response to him: What is a transfer case? Why is the part not inspected during regular maintenance? What warning would I have received if there was something wrong? Because it is a 2015 model & the platform for the vehicle has changed, GM supplier has to manufacture the part. It’s June 2022, the dealership notified me on the 10th that the part has been received. I can’t be the only consumer that has experienced this issue. In hindsight, luckily I was not on the freeway when this situation occurred.