It has been one electronic failure after another now I see through research there a lot of engine failures due to the truck going from 4 to 8 cylinders it impacts the valves and there's many transmission problems that may vary. I had the truck brand new and there's a lot of unexplained malfunctions in the computer that come and go I personally think the computer system is totally a function.
Air conditioner replaced, Valves replaced. Rusted under carriage after rust proofing added? Transmission and diff issue with big knock while driving when engaging between them? They call it normal…. Poor acceleration. Battery charger pad gone in first yr. Not a fuse and they said it would cost over $500. Navigator system was outdated when purchased and they told me it would cost $400 to upgrade… Beware of this truck if you are interested to purchase it. Big transmission issues and they are still trying to say it is a design issue and trying to put it back on the customers.
torque converter transmission issues
I love my 2017 Sierra 1500. however, my truck stays in the shop more than it does out. Now I'm having to replace the torque converter /transmission . this is a very common issue with GMC's and very expensive. unless you have thousands to just blow I wouldn't recommend this beautiful truck.