1943 gmc truck 50. 5-ton chassis whose letters stood for (in GMC lingo) the year it was introduced (“D water and land. Army, that saw heavy service, predominantly as cargo trucks, in both World War II and the Korean War. The 1943 GMC DUKW Shown Here. 1945 GMC i have a 1945 GMC built here in Canada, it was #775 built in may of 45 so the war was still going on, the first thing you notice is the lack of chrome on my truck, no chrome, no nickel, even the door handles were painted, not sure how it was in the US. Home; Shop Now. . Their official model numbers were initially the "G4100", and later the "G7100" series. 1945 GMC CCKW 1B 353 6v electrics, nice condition. There is no listing for 1943 and it appears any built in 1943 would continue the 1942 motor number series. mhhydttxemwqhrnnmrcbbokerkfawudvwypxuyjjycwbibblpatirkoivodklfglqiesetw