Rubicon Models CCKW-353 2� ton 6x6 Truck (GMC) The GMC CCKW-353 was a 2� ton 6x6 US Army cargo truck that saw extensive service in World War II and afterwards. The 6�6 M35 began to replace the CCKW in 1950, but it remained in active US service until the mid-1960s.
