A 2.5-ton, 6x6 truck, the CCKW was built alongside a similar but smaller model, the Chevrolet G506. A 1.5-ton, 4x4 hauler, the G506 was introduced in 1940 and remained in production until 1945 ...

The CCKW was very successful during WW2, amounting to almost a quarter of the total US truck production and about 70% of the total 2.5-ton haulers. Its main 6x6 rival was the Studebaker US6 ...