I just bought a 2011 silverado supercab with a sticker price of over $47,000.00 plus tax and now I am told that if I want to keep my doors from locking automatically I will have to pay GM $50.00 for a custom bdm program and pay the dealer another $40 to $60 to program it and they also say that if I ever accidentally hit the factory options setting in my dic I will loose this option. This is unaccetable to me in every way!! I was also shopping for a new car for my daughter but if this does not get looked at you can believe me that I will never buy another GM. The option to leave doors unlocked should already be in the computer!!