After checking the "safety" related items (tires, brakes, brake lights, etc) I think I would make the water entry points a priority. Reseal the roof, windows, doors, around exterior lights, storage compartment doors, etc. Being stored almost exclusively inside, might mean those things are in excellent condition. It also might mean they are in poor condition because no one inspected them regularly (sort of the thought of, it isnt outside in the elements so it will last longer and doesnt need to be worried about). With any luck, the seals will all be pristine, but it would be high on my list of things to check.
2023 GMC Sierra 3500 Denali
2020 Cherokee Arctic Wolf 287BH