GM’s ‘K2XX’ Chevrolet Silverado and GMC Sierra pickup trucks debuted in 2012 at the North American International Auto Show.

An estimated 2,061 trucks received iffy modules, beginning with 1,189 examples of the 2018 Chevrolet Silverado 1500 and 384 of the 2018 GMC Sierra 1500.

While the introduction of the Cheyenne trim preceded the debut of the third-generation Square Body Chevy truck, it remained available through the C/K's fourth generation. The fourth-gen GMT400 C/K ...