Review on 🔑 Protective Smart Key Fob Case Shell for Chevy/GMC Keyless Entry Remote - Silverado/Colorado/Sierra Canyon 2014-2017 by Travis Petty

it's just a shell you have to buy somewhere else to buy a 2032 battery and use the board from your old one (this saves a lot of money when programming a new one ) instructions NO, but not that difficult to understand and difficult. The battery can be used in two ways, check before picking it up. If it's not like mine, you'll have to take it apart and flip the battery. The small metal part needs to be adjusted correctly, it is small and easy to lose, and it requires great skill to put the battery in, again no instructions, use the old one for reference.