The Stovebolt Site Forums The Shop Area General Truck Talk 1947 Serial number and model year, does anyone have information

This question is for the general group. I have been messing with my early 47 EC GMC 1.5 ton dump truck. While getting it nearly ready to perform a little work, I noticed that the 8 hole wheels, on my truck are dated, 12-46. Is that typical? I hear talk but don't really have my own information to rely on. During the mid to late 40's, when did GM shift model years? Did that date float or was it a constant. Maybe coming out of WW2 had some effect? From my serial number can anyone date my truck accurately? I am sure (my hunch) that my truck was built some time during the first quarter of 47.

The 1946 "model" EC was sold into the 1947 calendar year. I think it was the first domestic "model" sold after WWII.

In the case of GMCs (not Chevrolet trucks), GMC simply did not use a year number, GMC used a model code.

For example: a 300 size (also called series) GMC was a 1.5 ton truck

EC and ECS and EF were model codes used in 1946 - here are EC-300 and ECS-300 and EF-300 model codes (and serial numbers): http://www.oldgmctrucks.com/page0016.html

It that confusing enough?

It even gets better in 1954 - the serial number also has a letter-code preface (Z for Z-series).

Hello Tim,
Thanks for the link to some good information. I was hoping that information may exist which would identify a day or at least a week when a certain serial number went out the door of the factory. The information did suggest a range for production of a certain series. Are you aware of anyone with production information?

Alan,

You might want to joing the oldGMCtrucks.com discussion board. Someone there should be able to answer that question.

http://oldgmctrucks.infopop.cc/eve/forums