Lost or broken your GMC Terrain key fob? This Eye4Techs replacement is here to save the day. It's a flip-style key fob with 5 buttons, fully loaded with electronics and a battery already installed—so it comes ready to go. It's compatible with FCC ID OHT01060512 and part numbers 13504199, 13574863, 20979468, 13504259, 13504204 (double-check your old fob's number to be sure). Fit is spot-on for 2016 GMC Terrain models. Now, heads up: this fob does need to be programmed by a pro—either a locksmith or your dealership. Once that's done, it works just like the original. Comes with a blade key too. You get 30 days to return it if something's off. Quality is solid; they pre-test each unit. So if you're tired of using the manual key or just want a spare, this is a way cheaper fix than going straight to the dealer. Just budget a little extra for the programming fee, and you're back in business.