172k and still going strong on my 2015 5.3. I change air filters every 40-50k, 7-9k oil changes, did plugs at about 110k. I also fogged the motor with Sea foam at about 100k. I also force the system to stay in v8 mode by keeping the trans in 5th gear.
Hoping to hit 250k with this one. Shouldn't be an issue.
Replaced entire A/C System at 130k
Rebuilt Transmission at 170k
Other than that just brakes and other preventative maintenance like fluids for transfer case, differentials, greasing here and there.
This truck has been cared for, but it's also been put to work hard almost daily. I'm very impressed with the overall quality. People seldom believe it has the miles it does, especially after seeing interior. I keep it clean but nothing fading, ripped, broken, ect. Cloth interior.