I know this is old, but it's a neat thread!
Mine gets rejected by all the decoders, but I was able to manually pull it.
Apparently it says I have an 82 4x2 w/ a 6.2L diesel, but what's kind of neat is it was built in Janesville, WI! Not sure if the cab was swapped at some point, which it may have been since the bed and front end were. lol
Kind of neat, though! It's now a 4x4 with a 350TBI and 90 Burb front end. Will check the RPOs if the sticker is still there, but I guess if the cab was switched, it may not be the original info anyways. We shall see.