I too purchased a 2024 GMC Ultimate and i can say for the money spent it was short on options and features that I expected and wanted in my new truck purchase .
The reverse lights are next to worthless and very much need to be fixed by GM , not sure why they would think of making the taillight assembly into a single fixture with no options to replace individual bulbs/leds ? I imagine that a 20 dollar cost reduction was found ?
Other thing that bothers me is the lack to power fold mirrors automatically when locked the truck , really should be a software inclusion .
Other suggestions.
1. air ride and load leveling suspension , with ability to raise and lower as needed .
2. having a stalk mounted lighting controls instead of dash mounted .
3. locate 4wd drive controls down to the shifter location where it makes sense.
4. when buying this i was very disappointed not to be able to purchase the volcanic red in this Ultimate version [ why?]
5. gm should consider a full moonroof for this truck as having this little roof port is not befitting
6. door mounted seat controls so you can see what you are doing , as passengers constantly turn on seat massage or lumber .