Part Numbers/FCC ID: M3N32337100. Frequency: 315MHz. Note: Not a key shell, it is a whole key Proximity Fob Fits for Chevrolet Colorado 2015-2021, for Chevrolet Silverado 2014-2019, for GMC Canyon 2015-2021, for GMC Sierra 2014-2019 Pros of Our Keyless Remote: With built in chip, sensitive response, 4 buttons car key: Lock, Unlock, Remote engine start, Panic alarm. Fast response, wireless remote control. Notice Programming: This remote and door key must be programmed and cut by a qualified locksmith or dealership(consult some different locksmiths before programming to ensure it is successful).NOTE a working key fob was needed in order to add a new key. This remote must be programmed and cut by a qualified locksmith or dealershipNeed to pay extra money for programming or cutting Package for Car Key Fob:1 x Car Keyless Entry Remote (Battery included). Size: 6.4x4cm / 2.52'x1.57'(L*W). Please check OE number/FCC ID and product picture with original one before purchase.