For the 2010 GMC Terrain, the low-beam headlights use H11 bulbs, while the high beams use 9005 bulbs. The 9005 bulb is also listed for the daytime running lights. Use these sizes when replacing the main headlight or daytime-running-light bulbs.
The fog-light fitment includes two listed options: H11 LED and H16 LED. Confirm the bulb currently installed and the lamp configuration before ordering fog-light replacements, since the supplied fitment data lists both options.
- Front turn signals and parking lights: 7444NA
- Front side markers: 194NA
- Reverse lights: 921
- Brake lights: 3057R
- Center stop light: LED
- Rear turn signals: 3057
- License plate lights: 2825 or 98
The tail-light listings include 194, 7441, and 3057R bulbs. Check the position and existing bulb before purchasing, particularly where multiple fitments are listed.