Unless it is a pre
MAY 1949 GMC or a post
post 1955 first series they did not stamp identification numbers on the frame.
There is one exception, if the body is a
FC (FORWARD CONTROL) it will be stamped on the frame.
We can tell you lot's of things you can do, but there are legal issues to deal with and you don't want to get caught by the Police or DMV for modifying your truck VIN's. The best thing is to be prepared with the information from your shop manual.
Here is some of that information that shows what these tags were used for and not for registering them as VINS as we know of them today.
MORE INFO 1954 SHOP MANUAL From
JIM CARTER Regarding 1947-1950 AD trucks
Here is a Tech Tip by
BARRY WEEKS that helps explain identification.
all of this information was found using the Stovebolt
SEARCH FEATURE at the top of the page from numerous stovebolt contributors.
