For the 2010 GMC Acadia, the headlight bulb depends on the installed headlamp configuration. The high beam is listed as D1S. Low-beam fitment includes either D1S or H11, so verify whether your Acadia has the D1S headlight system or the H11 setup before ordering. Do not assume the low-beam bulb is interchangeable between configurations.
Other notable exterior lighting includes a 12272NA front turn signal and 3157 daytime running light. The front side marker uses 194NA. Rear brake, center stop, tail, rear turn signal, and rear side-marker lighting are listed as LED, rather than replaceable bulb sizes in the supplied fitment data.
- License plate and map lights: 168 or 917
- Parking and several utility locations: 194 or 7441
- Dome light: 212-2
- Vanity light: 6612F
Check the original bulb and headlight housing before purchasing, especially for the D1S-versus-H11 low-beam variation.