I am late to the game here but have a 2020 Silverado 2500 I bought in January 2020. I have dealt with the brake issue twice and the second time they finally had the fix. No more speaking. However, I have the transmission clunking between 2 and 3 either on a decelerate around a turn or accelerate around a turn sometimes just decelerating to a stop. Dealer claims they cannot duplicate the issue. I need to take it in and drive with them to feel and hear the issue.
Has anyone been able to find a solution??? Was it the trans bolts??? It is driving me crazy.