appeared for the first time in 1912. The General Motors
Truck Corporation had been established to market the
Rapid and Reliance trucks, and in 1911 the two marks were
merged and all production centered on the Pontiac mark.
The GMC label was adopted the following year.
After WW I production was concentrated on trucks in the range from 1 to 5 ton. A Canadian production plant was set up in 1922.
By 1931 GMC were offering four wheelers, six wheelers and artics with a payload of up to 15 ton.
Diesel engines became available in some models from 1939, using 3- or 4-cylinder two-stroke Detroit Diesel engines build by GM.
The company name was changed to GMC Truck & Coach Division of The General Motors Company in 1939.
During WW II GMC became a major supplier of trucks in the 2½ ton range (CCKW), and also produced an amphibious version (DUKW).
After WW II production continued in all ranges.
The company entered a joint venture with Volvo in 1986, which resulted in the Volvo GM Heavy Truck Corporation, which eventually became Volvo Trucks North America.
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