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How to Replace the Key Battery of the GMC Terrain

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

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Video tutorial

If you own a GMC Terrain and want to know how to replace the car key battery, then this guide is all you need. First, locate the small metal button at the bottom of the cover and press it to release the physical emergency key contained within the cover.

Next, remove the back cover using your hands (or with the help of a flathead screwdriver) and locate the button battery right underneath. Simply remove it and replace it with the new battery.

Finally, reattach the back cover.


Updated on 5 June 2026 by ScegliAuto


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by ScegliAuto

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