The square body truck was a microcosm within the greater history of the lovable pickup truck. It was essentially an era where Chevy — and later other auto brands — made trucks that had a square body.

Taking over from a series called Task Force, Chevrolet and GMC’s C/K full-size pickup truck family was naturally graced with various nicknames over time. The second gen was the “Action Line,” while ...

Sold under the Chevrolet and GMC brands between the 1973 and 1991 model years, the third generation of GM’s C/K series was baptized as the ‘Rounded Line’ by its maker. Alas, serious C/K fans know this ...