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How to Replace the Key Battery in a GMC Terrain 2

Model: GMC Terrain MK 2 - Years: 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
Part: Key

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Video tutorial

With this guide, you will be able to independently and correctly replace the small button battery inside the smart remote of your GMC Terrain second generation (2018-2023). First, remove the physical emergency key from the cover. Then, use a flathead screwdriver to take apart the rear cover of the remote to access the dead battery.

Remove the old battery and insert a new compatible battery. Finally, reassemble the cover and insert the emergency key.


Updated on 26 September 2026 by ScegliAuto


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Watch the video!


by ScegliAuto

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