I got a letter from GM to bring my '22 to a dealer to install the missing rear park assist. It was marked as a $50 credit on the invoice, (chip shortage at the time). It's at the dealer right now, I'll see what the difference is when they call to pick it up. The upgrade is free, as is my 1st oil change they're doing also. Today was the 1st time driving it since last fall's storage. I had almost forgotten what a treat it was to drive.