OEM 5 Buttons FOB #1 Keyless Entry Remote For 2008 2009 2010 Cadillac DTS CTS With Do It Yourself Programming Instructions (Regular Ignition Models Only) This is about a genuine Cadillac part made in US by authorized distributor. Is an Original Equipment Manufacturer keyless entry remote transmitter with a new battery included and ready to be programmed to work. Each remote button functioning and signal have been tested. You can program this new remote yourself. The programming procedure is very easy to follow step by step, and is included with the remote. Any question you have, you can always contact us. It fits 2008 2009 2010 Cadillac CTS, DTS WARNING: This remote is for regular ignition car models ONLY. If your car has a push button or a turning knob instead of a regular ignition lock, this remote WILL NOT work in your car. This remote does not use a key that slides in it, is just the remote. If your remote has a small emergency key that slides in the remote, this remote WILL NOT work in your car. WARNING: Please make sure your actual working remote looks exactly as this one, same shape and same buttons, otherwise it will not work in your car. If you have no working remote for your car you need to call the dealer and per your VIN number they can tell you if your car has the original factory keyless entry system installed and what's the exact part number you need for your remote. Once you have that info, you can contact us and we can check if this is the right remote for your car. This is the remote type #1, so please make sure to match this type # with the remote you want to buy for your car . If you buy the wrong type #, then the remote will be stored on the wrong designated memory.