I have a 2014 with 92k miles on it and GMC just put in a remanufactured transmission covered under warranty. At 89k miles it was slipping so bad. Valves and the torque converter were replaced. But then it had new issues so they got approval to swap out the whole tranny. Hoping some things are better. The 2019 canyon v6 8 speed I’ve been driving has been much nicer as far as shifting goes.