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With two-way lumbar support it is a luck of the draw on how you fit. My two other vehicles have 4-way lumbar support, which means I can dial the support exactly where I need it. That said, the AT4's seat's lumbar support is not ideal, but close enough for me. I've sold other cars because the 2-way lumbar support hit me to low on my spine and "hurt" more than helped.

I have been struck by how my 2019 AT4 with 20" Goodyear's is inferior at hill climbing to my prior 2016 Suburban Z71 with 18" Nokian Rotiiva's. We have a roughly one mile 20 - 30% grade up the side of a mountain we use as a bypass when the road is out. The AT4 has failed to make the ascent twice when a bit wet - not yet mud. The Z71 never had an issue, even if it was a overgrown and wet.

My issue with the tailgate button is that I frequently have expensive mountain bikes and surfboards strapped to the tailgate, and it would be massively "not good" were one of my teenagers to accidentally hit the button while attempting to turn-on the heat/cooled seats while cruising on the highway. At the very least GM should deactivate the button while the vehicle is moving.

Ouch. Thanks cNate - I was not sure if it was a speed or time thing with the camera - thank you for confirming. At least going down the camera will be of use. I usually ascent at 15 - 20 mph. Appreciate the comments on the property. It has been in the family since the 1870's, and I am merely the generational custodian - compliments to my great great grandfather. The views are unbelievable - the pic is only halfway up the mountain.

Greetings, I see the TFL guys use it all the time, but when I select the front camera to be displayed on the center screen it defaults back to the home screen after like 10 seconds. Is there any way to keep the screen permanently depicting the front camera? We have a lot of 20-40 degree slopes on our property (see attached), and I am too old to go up or down these "blind". The front hood obliterates sight lines. Thanks!

My wife is the AT4 is the primary driver - I get it on weekends. She insisted on the nicer interior of the AT4 - especially the better quality leather and ventilated seats. The unperforated, unventilated, and plasticy leather seats in our prior SubZ71 were a great motivator to step-up to the AT4. Love the tailgate and surprised to have become accustomed to the head's-up display. The 10-speed transmission is so intuitive both in normal\spirited on road driving and in Low-range off-road that I do not bother with shifting manually, something I did often with the SubZ71. I have never tried the 8

Typically the only time I use the manual shifting is in 4Lo and climbing grass/gravel slopes or tiptoeing through rocky creeks. I hate the buttons, as I have to take my eyes off the trail to find the toggle buttons. The good news is that the 10-speed transmission is really good offroad and does a great job of being in the right gear for the situation; hence, I do not use manual shifting near as much with prior trucks/SUVs.

We chose 20" wheels because I thought the MTR's would be too noisy, I will most likely put Brembo's on, and my wife said she wanted the 20's. The GY TrailRunners are a great onroad tire, and I'll see how they do offroad this weekend. I have not driven the shortbed AT4, but my brother in-law bought a shortbed AT4 5.3L the day before us. My wife drove both extensively and said the shortbed is "a bit more bouncy but more maneuverable"...... I can say that the ride in our standard is plush, and softer than our prior 2016 Z71 with much better dampening and range. It only rides like a tr

Apologize for the delay and the drying wetsuit.

I have that exact truck in my driveway. It is a rare beast, and was the only one I could find in the SF Bay Area.

I got the GM\Borla Touring cat-back put on before I picked-up the truck from the dealer - easier than justifying to SWMBO later on. Absolutely no drone at any speed and/or while in V4. Quieter than most cat-backs - not loud or obnoxious in any way. You will not hear it at all unless you are giving it a lot of throttle or over 3K rpms. It has an extra baffle in it that prevents the drone, which is, I suspect, better at cancelling out the drone in the stock exhaust in AFM mode. The Nokian's are 32.1", and the exact same diameter and width as the optional 22" wheel\tire. No issues fitting

They are Weathertech's. They do very well to keep debris off of the side steps. They are not long enough to keep the exhaust tips clean, however. They are wider than my 275's too.

I ordered mine, as I could not find a silver one with all of the options I wanted - long process and wait. Absolutely no buffeting or vibration in my '16 Z71. I did notice both in two 2015 Sub rentals that I had for two weeks a piece.

Very nice - I got a silver one, but really like the Iridium (your color?). I put Nokian Rotiiva 275/65-18's on, as I had a lot of wheelspin with the GY's offroad. Otherwise, I was very satisfied with the GY's. The Nokians are the rare Traction and Temperature A, 700 Treadware. AT's, and have the mountain snowflake. Actually a bit quiter on the road too.

Zero drone or fitment issues with the GM\Borla cat-back on my 2016 Z71 after 3K miles. I drove off the dealer lot with it installed when I procured the truck. No vibration or buffeting on the truck either.