I lost the only key given to me when I bought a used 1996 Olds Ninety-eight. Dealership cut two different keys...One did nothing; the other made the door alarm ding but would not start car. Dealership says the cylinder must have been changed.
Does the VIN# indictate which chip MUST be associated with whatever key is cut for a new cylinder, or must the car computer itself tell the chip what its new code should be? It would be easier for me to change the cylinder at my home if the key is cut for that cylinder with a chip pre-programmed for my car. Is that how it works or must I tow it to a dealership to have the chip programmed for the new cylinder?