I had a '39 GMC.. that first pic is of a '39. No question about it.
The '39 and '40 looked pretty much the same from the outside.. but the big giveaway is the curved dash in '40.. the same dash used in both Chevy and GMC from 1940 thru 1946.
The pickup pic could be a '39 or '40.. the dashboard would tell the tale.
