I have a 2014 Siverado LTZ. Has 43,000 miles on it . Was driving on the interstate when I heard a whining noise and the transmission was not shifting correctly. Got off the interstate and as i slowed down heard a bang. Then the only gear that worked properly was Drive- no neutral or reverse. I had it towed to a mechanic who is repairing the transmission for me with a newly rebuilt transmission from GM. Costing me ~$6200. GM is not making good on anything with this truck. Extremely disappointed.