I just purchased a 2019 Sierra 1500 SLT with the X31 package and the 6.2 L engine.
I was amazed by the Hp and torque of the engine and the well matched 10 speed transmission.
Mine has the Crew Cab and short 5'8" bed.
I do miss the ability to slide 8' sheets of plywood into the bed the way I did on my Yukon XL with the seats down.
The thing is that the Crew Cab with a standard 8' bed is so long you'll never find parking on the street or in super markets.
I LOVE the new Pro Tailgate.
I am having problems with the cameras and can't get them to work correctly ... The dealer and I tried
6 other vehicles that he had on his lot and each one had different camera programs, none were really good.
There is no 360 degree camera display ... this SUCKS.
Unless you are towing something really heavy I'd say the 6.2 is enough.
The big problem for me is the suspension ....
At 55 to 65 mph on a curved road that has the slightest bumps the truck dances all over rhte road ..... dealer has no solution yet.
We think it might be the Rancharo shocks are not valved correctly .... I know of another gentleman who is having the same problem.