I picked up the Information Package from GM Canada for my truck about a year ago. It includes the trim and paint numbers, the body number, VIN number, production plant, production date, delivery date, engine number and the number of vehicles produced of a similar model. But it did not include the dealer's name. I found the information (both general information and information specific to my truck) to be very valuable. It is definatly worth the few dollars they charge for the service.
Hope this helps.