Go to GM Heritage center:
https://www.gmheritagecenter.com/gm-heritage-archive/vehicle-information-kits.htmlThen click on chevy trucks not shown below.
Then a page with years will come up. Click on your year and you will get a pdf with a lot of information on trucks for that year.
My son's 1946 2 ton GVW is 15,000 lb.