Been almost a year since I got my Silverado HD gasser also, and there are things I like and things I don't vs my 2016 half ton Denali.
Based on the lengths of these lists, it seems like I don't like my truck. That's not at all the case. The likes are mostly big things. The dislikes are mostly nits. Anyways...
Likes:
Towing stability with a large travel trailer. No brainer this should be better. Driving in strong winds or winding mountains is far less stressful, as is semi truck interaction.
Transmission is excellent.
Braking has become excellent over time.
The cameras! Man, the cameras are awesome.
The 6.6L gasser. I thought it was gutless when I first got it, but it's really woken up as it's approached and passed 10k miles
The screens (more on this in the dislikes session though too). They're clear, bright, and intuitive, mostly.
Wireless Android Auto
The towing mirrors are fantastic
Exterior lighting. We sometimes launch the boat in the dark, and all the illumination from the mirror lights and bed lighting is really nice, when I remember to turn it on.
The power up-down tailgate is a huge hit with the DW. I'm actually glad I got it vs the multi-pro.
Trailering app, light test, trailer profiles, etc. Very intelligent design and useful for someone like me with multiple trailers to keep track of.
Dislikes
The grade braking/auto parking brake is the most annoying thing on Earth. It kicks on at the most inopportune times when going to hook up a trailer when backing up a sloped driveway. To hook up my boat trailer on my sloped driveway, I used to put my 2016 in reverse, and use the brake pedal to adjust my approach speed when lining up. The stupid logic of the 2024 will automatically bring the truck to a complete stop while inching back, and won't let it roll again until you touch the gas. The only way to hook up a trailer on a sloped driveway is to drive with two feet so you don't lose the split second going from gas to brake. There's no way I've found to turn this system off. I HATE HATE HATE this...
When I got it, the trailer brakes would just randomly stop working. I live near mountains. That was fun. Fixed this with a module update and a diode on my travel trailer.
Sometimes the tailgate just decides it won't open using the rear switch. I need to use the button on the dash or the keyfob to get it to open. No, it's not locked. What was wrong with handles and latches?
I have a weird chirping noise at low RPM and light throttle loads. Will have dealer look into this. Sounds like it could be exhaust chirp, or a knock. Doesn't seem belt-related.
Yes, it's a HD pickup, but the ride should be better. I don't expect it to match the MagneRide in my Denali, but the Z71 Ranchos stink, and it'll rattle your teeth out over square edge junk and handles dips in the freeway like a pogo-stick. I don't think the Ranchos have any rebound damping at all.
Related to previous, the TPMS warning threshold needs to be adjusted down (for better ride). 70 PSI is too high. Per Michelin's specs, 50 PSI all around should be all I ever need for my towing, and a better ride.
Infotainment screen is laggy with Android Auto, often requiring several taps, presses, etc to get it to respond. Strangely, the less powerful system in my 2016 had none of these issues and was super responsive.
Gauges should be upgradable via third party updates. The stupid bars are useless for things like temperature. I want numbers, not random bar gauges. Also, a transmission gear indicator would be nice.
Size. Seriously. It simply doesn't need to be so comically large. Parking it sucks, even with the nice cameras. If GM made a truck that's the size of a half ton Denali or AT4 but with 2500 lbs of payload, half ton steering rack, 6.6L gasser/Allison... I couldn't give them my money fast enough. They'll say "but nobody bought a Titan HD..." Well yeah, it's a Nissan.
Ancient steering setup. GM already beats the others in ride and handling with the superior IFS setup. Rack and pinion steering instead of old school tractor tech would be sublime.
The seats were better in the 2016. The 2024s are less plush, so much so that my wife sits on an additional cushion in the new truck.
Collision warning forgets when I configure it to use beeps instead of the seat buzzer. I'll be backing into a space and the seat will buzz and scare the crap out of me. I'll set it to beep, then it'll randomly set itself back to buzzing a few weeks later.
Like Rancho should be embarrassed to have their name on those shocks, Bose should be to have its name on that sound system. It's OK, not great. I don't expect it to sound like the Burmeister in my wife's Benz, but I think the 2016 sounded better and had more adjustable range.