How do you use a slim Jim on a 1990 Cadillac?

Most later model cars should not be Slim Jimmed. If you are not very care full a slim Jim can pull the linkage lose inside your door and will require the door panel to be removed from the inside with the door closed, a difficult job if not impossible with some cars. You can buy a complete lockout kit from your local auto parts store for less than $100 (about the cost of a locksmith these days) and it will save you money and damage from a slim Jim and be yours forever. The kit will come with all the special tools and instructionsfor most cars.