KOG303 Blank Transponder This listing is for 1 brand new uncut transponder keys for select GM vehicles. Please check product description for vehicle fit guide. 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. This product is fully tested to guarantee its functionality. Replacement for part numbers: B111, B111-PT, GMX-100C, 15871576, 12451816, 12450813, 15289761, 15824470, 15921351, 15282677, 15296738, 693126, 692139, 5904001, 692933, 692932, 692931, 593254, 693121, 693127 Complete working key with chip included