Technically, the history of GM pickup trucks goes back to 1902 when the Rapid Motor Vehicle Company (a forerunner of GMC) sold its first Rapid truck in Detroit. The first true Chevrolet pickup truck was the 1918 Chevrolet Model 490 Light Delivery - the direct ancestor of the Chevrolet Silverado pickup trucks we know today.
Closely intertwined with their GMC siblings, pickup trucks from Chevrolet and GMC typically differ only in trim levels, with the latter generally offering more luxury features. Basically GMC pickups are the “Cadillacs” while the Chevys are, well, the "Chevys." The Silverado name was first applied to a Chevrolet light duty truck in 1975 as an upper trim-level designation. However, in 1999, all Chevrolet pickups were tagged “Silverado,” which carries forth to this day.
While Chevrolet divides their pickup trucks into weight classifications with the three designations - 1500 denotes half-ton models, 2500 for three-quarter ton and 3500 for a one ton - this article will focus on the half-ton versions of the Silverado.