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How to Replace the Key Battery on a GMC Terrain

Model: GMC GMC Various
Part: Key

If the smart key for your GMC Terrain has suddenly stopped working, do not worry as the solution may be much simpler and more economical than expected. Often, this problem is caused by a depleted battery. Here’s how to replace it in seconds. First, locate the small metal button on the side of the cover and press it to slide out the physical key. Next, fully open the cover and proceed to replace the old battery. Once done, refit the cover and insert the emergency key back inside.

Updated on 16 May 2026 by ScegliAuto

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by ScegliAuto

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