Smart Key Fob Shell Case Replacement Fits for Acadia Terrain 2017 2018 2019 2020 2021 Key Fob CoverStyle: 5 Buttons DAbout this item Compatibility: This replacement key fob case is compatible with GMC Acadia Terrain 2017 2018 2019 2020 2021 5 Buttons Sturdy Car Key Fob Replacement Case Shell: This key fob case is made of high-quality ABS plastic and alloy, ensuring durability for long-term use. It is the best replacement for a key fob with broken buttons or a worn key case. Easy to Install: This key fob shell is easy to install. No programming required. Just switch the internal components from your old remote key fob to this new key case and take the uncut key blade blank to a locksmith or dealer to be cut to match your car. Just Empty Key Fob Cover Case: This is just an empty key fob case shell, with no interior components (electronics/transponder chips, etc.) included. Signal Not Affected: This keyless entry remote control car key fob replacement case is designed to match the original car key fob remote 1:1. It will perfectly align with your car key without affecting button sensitivity and signal. Dimensions: 4.69 x 2.99 x 0.63 inches