To be fair....the old square bodies were hellacious trucks. I had a 78 K20 with a 454/4sp and there was nothing that would stop that truck. literally.
Chevy can make good engines and most transmissions are OK, which is why the cars are OK
Trucks on the other hand rattle after a few years, knobs and handles break off, just seem to nickle and dime you to death
Always needed a spare starter