When there aren't 2 existing working keys to use to initiate programming, please contact an automotive locksmith for programming. If you have two working keys, this can be programmed with an included easy to use customer programming procedure. FCC ID: HYQ1EA. Part Number: 13508275. Condition: OEM New Brand: GMC This remote has 5 buttons, tested and guaranteed to work. Programming Procedure: For GMC Acadia (2017-2019): Before you proceed, please make sure the vehicle is off. 1. Put the two programmed remotes in the cupholder.2. Remove the key lock cylinder cap on the driver door handle. Insert the vehicle key of the new transmitter into the key lock cylinder on the driver door handle and turn the key, counterclockwise, to the unlock position five times within 10 seconds.3. Place the new remote into the transmitter pocket. The transmitter pocket is inside the center console storage area between the driver and front passenger seats.4.Press ENGINE START/STOP. Once the DIC shows that it's ready to program another remote it means that your new remote has been successfully programmed.5. Remove the remote from the transmitter pocket and press the lock or unlock button. Repeat steps 3-5 to program additional transmitters. When all additional transmitters are programmed, press and hold ENGINE START/STOP for 12 seconds to exit programming mode. The following vehicles can use this remote when equipped with the factory keyless entry system: GMC Terrain (2018-2022) and GMC Acadia (2017-2020).