I have a 2017 CT6 limited. I bought it CPO with 25,000 miles in it. it started shuddering at 35,000. They replaced the torque converter (no charge). I had some leakage around the rear differential and they replaced the seals. The auto -stop jerking thing is something you have to live with if you want good gas mileage and this big -ass car gets great gas mileage. I wish Incould import a 2024 from China. This car is the bomb!❤️
