Keyless2Go New Uncut Replacement Transponder Ignition Car Key Circle Plus B111 This is a brand new uncut transponder key for select GM vehicles. Please check product description for vehicle fit guide. A website link to free DIY programming instructions will be provided with every order. 1 original key required in order to do self-programming. Otherwise you will need to get this key programmed by an automotive locksmith or dealership. Replacement for part numbers: B111-PT, GMX-100C, 15871576, 12451816, 12450813, 15289761, 15824470, 15921351, 15282677, 15296738, 693126, 692139, 5904001, 692933, 692932, 692931, 593254, 693121, 693127 CANADIAN VEHICLES: vehicles made for Canadian market do not have onboard DIY programming available and will require dealer/locksmith programming; please contact us before purchasing if you have any questions.