2018–2024 GMC Terrain key fob battery
The 2018–2024 GMC Terrain key fob takes a CR2032, a 20 × 3.2 mm 3 V lithium cell. Below: how to open it, what to do if it dies, and the manual we checked.
Buy CR2032 batteries CR2032 specs & equivalents
Our pick: Duracell CR2032, 2-pack on Amazon, a name-brand cell in child-resistant packaging.
Tip: change the spare key at the same time. Both cells usually age together.
Quick facts
Before you start
- Get a new CR2032 cell from a fresh pack.
- Work over a table or soft cloth so small parts and buttons don’t get lost.
- Note which way the old battery faces before you take it out.
- Keep loose coin cells away from children and pets. See coin battery safety.
How to replace the 2018–2024 GMC Terrain key fob battery
- Press the release button on the side of the key and slide out the metal key blade
- Push a thin flat tool into the seam at the middle of the key and lift off the back cover
- Lever the old cell out with a non-metal tool
- Fit a new CR2032 with the + side toward the back cover
- Check the silicone seal sits flat with no folds, then press the two halves together and refit the blade
Confirmed in the 2018 through 2024 Terrain owner's manuals (CR2032). From 2025 the key uses a CR2450 - see the 2025-2026 page.
After you change the battery
- Press lock and unlock from a few metres away. The car should react on the first press.
- On push-button start cars, start the engine once with the fob in your pocket.
- If nothing happens, re-open the fob and check the battery direction and contacts. More fixes: key fob not working after a battery change.
Starting the car if the fob battery is dead
Put the key in a cupholder (the backup spot named in the owner's manual)|With the vehicle in P (or N), press the brake and ENGINE START/STOP|Replace the key cell soon
General backup methods: how to get in and start with a dead fob.
About the CR2032 battery
CR2032 is a 20 mm × 3.2 mm, 3 V lithium cell with a typical capacity of about 225 mAh. The same size is sold as DL2032, ECR2032, KCR2032, 5004LC. A CR2012 or CR2016 or CR2025 has the same diameter but is thinner, so it can fit loosely and runs down sooner. Stick with CR2032.
Photos from GMC Terrain owners
No owner photos yet for this generation.
Other vehicles that use a CR2032
2020–2024 Buick Enclave2021–2022 Buick Envision2018–2024 Chevrolet Equinox2022 Chevrolet Silverado 15002019–2021 Chevrolet Silverado 15002021–2022 Chevrolet Tahoe2018–2023 Chevrolet Traverse2021–2026 Ford Escape2022–2024 Ford Expedition2021–2026 Ford F-1502017 Ford Focus2022–2026 Ford Maverick
Other GMC Terrain years
Questions
What battery does the 2018–2024 GMC Terrain key fob use?
Terrain and Terrain Denali: 1 × CR2032 (smart key).
How many batteries does the 2018–2024 GMC Terrain key fob need?
1 CR2032 cell.
Can I use a CR2012 or CR2016 or CR2025 instead of a CR2032?
It has the same 20 mm diameter but is thinner, so it can lose contact and runs down sooner. Use a CR2032.
Which battery names are the same as CR2032?
DL2032, ECR2032, KCR2032, 5004LC are the same size as CR2032.
How do I start the 2018–2024 GMC Terrain if the key fob battery is dead?
Put the key in a cupholder (the backup spot named in the owner's manual)|With the vehicle in P (or N), press the brake and ENGINE START/STOP|Replace the key cell soon
Do I need to reprogram the key after changing the battery?
Most key fobs keep their pairing when the battery is changed. If the fob stops working, check the battery direction and contacts first; our troubleshooting guide covers the rest.
Related guides
Fob not working after a battery change?Signs the fob battery is dyingStarting a car with a dead fobCR2032 vs CR2025 vs CR2016