The dealers are independent business's and they run their business their way. I have ordered many GM vehicles over the last 40 yrs but I never ordered from the factory. They do not sell to customers, only to their dealers.
I seen this posted somewhere?
1100 and Dealer Allocation
This causes a lot of issues. When you place an order with a dealer, the status is 1100, PREIMINARY ORDER ACCEPTED. UNTIL GMAD ACCEPTS the order, it just sits there at 1100. You don't have an order with GM at this point. You only have a dealer requesting an allocation for a slot in the production schedule. Dealer Allocation is simple to understand - GM changed its model for producing vehicles a few years' back. Dealers are now awarded allocation based on past performance, as well as other factors. If you are sitting at 1100 you are not in line yet for production. Your dealer MUST get GM to accept the order. When GM accepts the order, all the parts are available and will be allocated to your car build.
The allocation number will tell all GM dealers exactly how many trucks/suvs GM will build for them over next few months. Unfortunately, this does not constrain the dealership from pre-selling more than the earned allocation, as GM does not manage this process in any way. In other words, a dealer (knowing they only have two Denali’s arriving within the next six months) can pre-sell 20 and simply tell the customer that the order has been put in. For the 18 customers who are at the bottom of the list, they are at the mercy of whatever story the dealer tells them regarding the production of the vehicle. Dealers are under no obligation to disclose how many of their earned allocations are spoken for when making pre-order sales. As such, many dealers don’t disclose this information to the customer because if they did, you would probably walk right out the door.