Edit... In your case the Transmission ID is under the VIN and the Rear Axle code is under the engine. I've seen other POPs that have those positions swapped, in which case the picture below would be correct.
I believe your trans is build date of February (B) 23rd. Engine is Feb 29. Truck build month is March (C). I'm not sure what D1H stands for. Seems to be a common number sequence for many trucks though looking at the build date thread.
Would you be willing to post that on the
build date thread?