Finally at a dead end. Dropped my 2016 Highcountry off at dealer #3 last week, dealer #2 would not return my phone calls. A friend of my sons said dealer #3 fixed his GMC and I should take mine there. Dealer #2 was able to remove the 3" of play, but could not make it 100%, the truck would still wander. So I was exicited when dealer #3 called and said my truck was ready. The excitment did not last long. Upon my arrival, they said dealer #2 completed TSB D correctly installing the pitman shaft. They rechecked all the settings along with the alignment and said that was all they could do. The service writer stated the tech drove the truck and he said it was good, I guess he drove it around the dealership. Once out on GA 400 heading south, it was and is still the same, constantly having to correct the path of the truck. Now I am in a battle of how I know it drives and how they think it drives. I have waited for years to buy a truck like this and now I am stuck with a $64k wandering truck. This all makes me sick, for years I have driven GM vehicles, but no more. I will tell everyone that will listen how GM is treating everyone that has this issue. I guess the next big question is.............Ford or Ram!