The G-749 family of vehicles—including the M211 and its 6-wheel variant, the M135—were painstakingly designed and engineered by General Motors in the hope that these trucks would be a permanent replacement for the CCKWs of WWII. General Motors pointed out that the vehicle's similarity to the CCKW would make the M211 easily maintainable and repairable for motor pool personnel who were already trained on the G-508 (CCKW) family of vehicles. Further simplifying maintenance, the M211's transmission operated on engine oil (OE) rather than automatic transmission fluid (ATF).
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