Yes, trucks are more complex…
Yes, trucks are more complex, but the problems are basic. The 5.3’s should not be having lifter failures. Period. The transmission failures span years and it isn’t just transmissions, it’s also the torque converter, which isn’t a particularly complicated component. The more likely cause is using cheaper materials and cutting corners in structural design. My 2016 has lots of cool technology and convenience, but I’d trade it for a more reliable drive train if that’s what it took. My 2003 gave me no problems until the transmission started to slip at 240,000 and I would’ve just replaced it if the truck wasn’t rusted out beyond repair; in fact, there are days when I wish I still had it.
There is no excuse for the major drive train failures. If the Big Three are going to cheap out on the drive drains and charge north of $70K for upgraded trims, then they need to warranty those drive trains for the life of the truck. End of story.