I had a 23 2500HD High Country on order in Oct. It was converted to a 24 in March, and I am picking it up this week.
Regardless, if you dealer does not have allocation for that vehicle and trim package your order will not be accepted by GM. If there are constraints on anything it will be delayed. I ordered my in Blue and that color was not available yet so if i wanted my order to go through I had to change the color which I did.
