"Your 2018 should definitely have the updated design though with the flatter contoured top stamp. Took 10 years, but i dont believe any of those have failed."
Good to know but since the title includes '18, I wanted to ask. I'll take a look at mine anyways and maybe just start taking a peak every 6 months, as I only put about 8-9k miles on the truck each year and I agree that temperature swing and age should attribute to the failures more than mileage.
Yep, just compare to posted pic mentioned above.
Your 2018 also should have the auto rear hatch button opening feature. Overall great year to be in!
Bloc will make a nice clean thread on this soon with fax, pics, part numbers and technical insight.