[Compatible with]: This keyless entry key fob case shell fit for 2015-2019 Cadillac ATS/2016-2019 ATS-V; 2017-2020 Cadillac CT6/CT6 Plug-In; 2018-2019 Cadillac CTS/CTS-V/2014-2019 CTS Sedan; 2015-2019 Cadillac XTS.
[Replacement]: FCC ID: HYQ2AB,HYQ2EB; Part Number: 13598507,13510254,13598538;13510255. Please make sure your key's FCC and P/N is consistent with ours before purchasing.
[Product Included]: This product just an empty aftermarket smart key case replacement,isn't a complete remote key fob.There is no interior ( circuit board/chip/battery ) unit inside.
[Product Installation]: 1. Please cut the blade at your local car locksmith; 2. Then remove electronic components from your original key and replace them with the new key fob shell; 3. This itme is just a car key fob case, no programming needed.
Buttons: Lock, Unlock, Remote Start, Trunk, Panic. Please check the button position and appearance of your original remote key fob is the same as ours before purchasing. And check if each button functions properly after installation.