Most of these trucks need nearly everything in the suspension by now if it has not been redone already. The only exception I have personally seen is that the OEM Bilsteins seem to last an incredibly long time. Most average/cheap shocks have a 50,000ish mile life before they are shot, but it can be a lot less if you drive on a lot of rough roads.
It is typical for shocks, especially cheap ones, to quickly wear internally and lose performance without visible indications. Sometimes you will also end up with a blown seal and leaking shock, at which point it is definitely time to buy new ones. Generally, if the truck is bouncy or floaty, especially over rolling bumps on the highway, it's probably time.
Upper and lower control arms can be checked for visible cracking. They last a long time, but after 100k+ miles, they are probably worn. They honestly aren't great to start with (very big, very soft) if you corner aggressively or have oversized tires. Too soft to control the extra load.
Nearly everything else (tie rods, wheel bearings, ball joints, steering gear, etc.) will have play once worn, which you can check with the truck on jack stands.
Big and/or wide tires will wear everything out more quickly. Especially when you start talking about the silly 24x12 kind of trend of low offset stuff that stick way out. Moving the scrub radius out like that gives the wheels and tires (which are also heavier than stock) a lot more leverage over components not made for it. These trucks tend to wear a lot of stuff out and get loose as it is, so upgrading or at least keeping a close eye on things becomes more important.
