Got a beat-up key fob that's seen better days? These replacement shells are exactly what you need to give your remote a fresh new look. This is just the physical case only - no electronics, chips, or internal components included. You'll need to transfer everything from your old key fob into these new shells. They're designed to fit select GM and GMC vehicles from 2019-2022, including Sierra and Silverado models. The package comes with two complete shells and two new uncut keys, so you've got a backup just in case. Compatibility is key here - make sure your original key fob has the same button layout and part numbers (13591396, 13522904, or 13522854) before ordering. The installation process is pretty straightforward if you're handy with small electronics - just carefully transfer the circuit board and battery from your old case to the new one. Much cheaper than buying a whole new programmed key fob from the dealership! Perfect for when your current remote is cracked, scratched, or just looking tired but still works fine electronically. Just remember - this is purely the physical housing, so you'll need functioning electronics from your existing key to make it work.