I may be on a fishing expedition here, but they do show up from time to time at swap meets or end up in the unknown bumper pile. The 47 and 48 GMC bumper was found on 1/2 tons all the way up to the 1 1/2 ton trucks. Not all the 1 1/2 ton trucks had them but some did. No this bumper is NOT sold at all the suppliers, the suppliers do not carry it as it is not re manufactured so do not send me links to suppliers, I have already looked! Attached is a photo of what it looks like.
Look at the way the bumpers are shaped compared to the center photo of a new replacement bumper, they are not shaped the same. The one pictured on the truck has a couple extra things, accessory guard and a third bolt on the end which are not needed.
Chris, let me know, the 47 and 48 GMC 1 tons would have come with that same odd looking bumper, it is different from the Chevy bumper used that same year. Also if you happen to have a bumper bracket shaped like a question mark, I am looking for one of those as well.
The 47-48 bumper has rolled edges top and bottom. Chevy bumpers and repops are almost flat top to bottom. The 47-48 bumpers also takes a special set of brackets to accommodate the different grill and support bars that go with it. I have a 47 and a 48 but do not have an extra bumper or brackets. Keep looking, the hunt is half the fun.
1947.2 GMC 1/2T panel 1947.2 GMC 1/2T long bed 1948 GMC 1/2T pick-up
Twin Jimmys, the front brackets on the 3/4 ton are also special in a different way because they look nothing like the 49 and later brackets. I actually found some NOS ones on E-bay recently. The 3/4 ton brackets sit forward a lot more, and are held on by only 2 bolts where the later ones are 3 per bracket. They are also shaped differently. I have both outer brackets, but I am still short one inner, it's shaped like a question mark. I found a springs and overloads shop in Salt Lake City, Utah that can probably make the bracket I am missing but I am still waiting on a call back from them to see if they can do it.
Ryan, That bumper was used on 47, and 48 model series 100 1/2 tons, through series 250 1 tons. Series 280, 1 1/4 ton, series 300 1 1/2 tons, & series 350 2 tons, all used the heavier channel bumpers. No 300 series 1 1/2 ton trucks used that bumper.
Spanky Hardy Collector Of Fine Old G.M. COE Trucks & Antique Holmes Wreckers