2021 Yukon Denali Steering Wheel Controls Not Working

[TheDobey]

During the predelivery inspection, the dealership found that the most of right bay of steering wheel switches to control the Driver Information Center mostly don't work. The scroll wheel works up and down, but the left to right arrows and the selection key don't register. The volume and favorites buttons also don't register. 

After the dealer worked on it for close to 5 hours, I told them I'd take it as is and maybe warranty the repair later. Anyone have any thoughts? Possibly a loose connection behind the wheel?