2011 GMC Terrain headlight fitment: The low-beam headlights use H11 bulbs, while the high beams use 9005 bulbs. The daytime running lights also use 9005. No projector or non-projector headlight distinction is specified in the supplied fitment data, so verify the existing bulb before ordering if your Terrain has replacement or modified headlamp assemblies.
- Fog lights: Listed options are H11 LED and H16 LED. Confirm the installed housing and connector before choosing between these options.
- Front lighting: Front turn signals and parking lights use 7444NA, while the front side markers use 194NA.
- Rear lighting: The reverse lights use 921, rear turn signals use 3057, and the brake lights use 3057R. The center stop light is listed as LED.
- Interior and auxiliary bulbs: Dome and map lights use 2825 or 98; the vanity light uses 6612F. License plate lighting is listed as 2825 or 98.
Because several locations have more than one listed option, compare the original bulb and socket with the fitment before purchasing.