The most common configuration is an H11 low-beam halogen bulb, with a 9005 high-beam bulb and H11 for fog lights. Some trims equipped with HID projector headlights use D2S or D3S for the low beam, while high beams are typically 9005. Always verify the exact bulb type for your specific vehicle and trim.
Halogen headlights: most trims
If your Acadia uses standard halogen headlights, these are the bulbs you’ll most likely need.
- Low beam: H11
- High beam: 9005
- Fog lights: H11
Halogen configurations are common in base and mid-range trims, but exact specifications can vary by market and production date. Verify against your owner’s manual or the bulb itself before purchasing replacements.
HID headlights: when equipped
Some 2015 Acadia models with HID projector headlights use different bulbs for the low beam, depending on the specific HID system used by the factory option.
- Low beam: D2S or D3S
- High beam: typically 9005 (though some configurations may differ; consult the manual)
If your vehicle has HID headlights, the exact bulb type can vary by trim and production lot. Check the owner’s manual or consult a dealer to confirm the precise bulb specification for your car.
How to confirm the exact bulb in your vehicle
To ensure you buy the correct bulb, verify with one of these methods:
- Consult the vehicle’s owner’s manual bulb section for the exact part numbers.
- Inspect the headlamp assembly and read any markings on the bulb itself after removing the dust cover.
- Use GM’s parts lookup or contact a GMC dealer with your VIN to confirm the exact bulb type for your trim and production date.
In short, the standard approach is H11 low beams with 9005 high beams for most 2015 Acadias, while HID-equipped versions use D2S/D3S for the low beam and 9005 for the high beam. Confirm with manual or dealer guidance to avoid mismatches.
Summary
The 2015 GMC Acadia’s headlight bulb type depends on the lighting system fitted. Most models use halogen H11 low beams (with 9005 high beams and H11 fogs). If your Acadia has HID headlights, the low beam is typically D2S or D3S, with high beams usually 9005. Always verify the exact bulb type for your specific vehicle trim and production date to ensure a correct replacement.