The C/K was Chevrolet's full-size pickup truck line from October 1959 until 2002 in the United States, from 1964 to 2001 in Brazil, and from 1975 to 1982 in Chile. From 1959 to 1987, C/K was also the name of GMC's truck series; it switched to the name Sierra from 1988 to 1999 while sharing the C/K platform. The first Chevrolet pickup truck was introduced in 1924, though in-house designs did not appear until 1930. "C" indicated two-wheel drive and "K" indicated four-wheel drive. The aging C/K light-duty pickup truck was replaced with the Chevrolet Silverado and GMC Sierra names in 1999 in the United States and Canada, and 2001 in Brazil; the Chevrolet Silverado HD and GMC Sierra HD heavy-duty pickup trucks followed. Until this time, the names Silverado and Sierra were used to identify the trim level of the C/K trucks.
Launched in the fall of 1959, the 1960 model year introduced a new body style of light pick-up truck that featured many firsts. Most important of these were a drop-center ladder frame, allowing the cab to sit lower, and independent front suspension, giving an almost car-like ride in a truck. Also new for 1960 was a new designation system for trucks made by GM. Gone were the 3100, 3200, and 3600 designations for short 1/2, long 1/2 and 3/4-ton models. Instead, a new scheme assigned a 10, 20, or 30 for 1/2, 3/4, and 1-ton models. Since 1957, trucks were available from the factory as four-wheel drive, and the new class scheme would make this known. A C (conventional) in front of the series number designates 2-wheel rear drive while a K designates 4-wheel drive.
Actual badging on Chevrolet trucks carried the series name system from the previous generation for 1960 and 1961: the 10, 20, 30, and 40 series (C and K) were badged as "Apaches", 50 and 60 series trucks were badged as "Vikings", and the largest 70 and 80 series models were marked "Spartans". For 1960, C/K trucks were available in smooth "Fleetside" or fendered "Stepside" versions. GMC called these "Wide-Side" and "Fenderside". Half-ton models were the C10 and K10 long-bed and short-bed trucks, and The 3/4-ton C20 and K20, as well as the one-ton C30, were also available. GMC did not use the "C" nomenclature, though their 4x4 versions used the "K" nomenclature. GMC model numbers for 1/2, 3/4, 1, and 1.5 ton were 1000, 1500, 2500, and 3000. The 1.5 ton Chevrolet C40 and GMC 3000, which were using the light-duty cab (but only as chassis-cab and stake models), were discontinued for the 1963 model year.
The 1960, 1961, and 1962 models featured torsion bar front suspensions, with trailing arm suspension rears. Trim lines were base and "Custom". Engines included the base GMC 305 in3 V6 for the GMC version, 135 hp (101 kW) 236 in3 (3.9 L) and 150 hp (112 kW) 261 in3 (4.3 L) straight-6s, and a 283 in3 (4.6 L) V8 with 185 hp (119 kW