GMC Terrain Bulb Size by Year
The 2026 GMC Terrain has factory LED headlights, so there is no headlight bulb to replace. 2024 models have factory LED headlights, so there is no headlight bulb to replace, and earlier years are in the table below.
Headlight bulbs by model year
| Model years | Low beam | High beam | Fog | Buy |
|---|---|---|---|---|
| 2026 | LED | LED | - | |
| 2024 | LED | LED | - | |
| 2019-2022 | LED | LED | H11 | |
| 2010-2018 | H11 | 9005 | H11 | Shop H11 |
LED means the headlight is a sealed LED unit from the factory, so there is no bulb to buy. Some trims differ from the base car, so check the bulb you are removing. Shop links go to Amazon, and we may earn a commission at no extra cost to you. Open your exact year below for every bulb position and sources.
Every Terrain year
Sources. The bulb code for 10 of 15 model years is checked against a cited source, most often SEALIGHT LED bulb finder, Auxito GMC Terrain bulb guide and HeadlightBulbSizes.com. Each year page lists its own sources.
Last verified 2026-06-19. Maintained by Matan B., who runs GarageDex. How we verify.