So...where do I begin here...
What is it that you are expecting your dealer to tell you? Your car is sitting at 1100...the order has been placed, but not accepted by GM yet. There's really no point in constantly telling the customer, every other day, or every week, "sorry, you're still sitting at 1100..." They're only going to reach out to you either when the order is accepted, and maybe as it goes through the various stages of production, or they may not reach out to you until the car is actually built and invoiced.
There are people waiting nearly a year for their 2022 Corvettes to get built...and most dealers aren't going to reach out to the customer unless there's news to report back to the customer. Imagine the frustration of those customers that placed Corvette orders 8 - 10 months ago...and...their orders are suddenly ready to be placed with allocation and then the dealership calls and tells you "sorry, you'll have to delete the carbon fiber ground effects package and Magnetic Selective Ride Control from your order because both options are now on 0% constraint, and GM won't accept the order unless those options are removed..."
Right now, it's an absolute nightmare for the customers as it is for the dealers...
Now a dealer could build a tracking page for their orders similar to what I built here - and they could automate it to some degree more than I can, BUT, that takes someone with IT/programming experience, which is something most automotive dealerships do not have.
So, it really comes down to a customer's expectations (which in most cases, aren't realistic in today's world), vs what the dealer's expectations are which is reality.
I understand the frustration from the customers' point of view, but based upon my experience on both the dealer and the customer sides, most customers are not patient, don't care nor want to hear about supply chain and production issues and just want their cars and want them now. That's not realistic.
Ordering a car today, be it Cadillac, Corvette, Porsche, BMW, Jeep, etc., is not like going to the grocery store and ordering a 1/2 lb of sliced ham from the deli counter. It just doesn't work that way.