The 2017 GMC Acadia’s bulb type depends on the trim and headlight system. In most trims, you’ll encounter standard halogen bulbs: H11 for the low beams and 9005 for the high beams. If your Acadia has HID headlights (common on the Denali and some optional packages), the low-beam bulb is a D3S HID bulb, while the high beam typically remains 9005.
The following article breaks down the bulb configurations by trim and provides guidance on identifying which system your SUV uses, along with practical notes for replacement.
Bulb configurations by trim
Below are the typical configurations you’ll encounter on a 2017 Acadia, separated by whether the model uses halogen headlights or HID headlights.
- Low beam: H11
- High beam: 9005
For most non-HID Acadia trims, the low-beam is H11 and the high-beam is 9005. This configuration is common on base and mid-level models without HID headlights.
- Low beam (HID): D3S
- High beam: 9005
On HID-equipped Acadias (notably some Denali models or with specific options), the low-beam is a D3S HID bulb, with the high beam still using 9005 in many configurations. Always verify with your vehicle’s documentation or by inspecting the headlamp assembly.
Verification and replacement tips
To determine the exact bulb type for your specific SUV, check the owner’s manual or the label inside the driver’s door jamb, which often lists bulb specifications. If you have HID headlights, you’ll see ballast hardware near the headlamp; halogen systems will not have a ballast. When replacing bulbs, handle only the bulb itself with clean gloves or a cloth to avoid oils transferring to the glass, which can shorten bulb life. If you’re unsure or dealing with HID bulbs, consider professional installation to avoid damaging the headlight housing or ballast.
Summary
In a 2017 GMC Acadia, most trims use halogen headlights with H11 for low beams and 9005 for high beams. If your Acadia is equipped with HID headlights (common on Denali or certain option packages), the low beam is a D3S HID bulb while the high beam remains 9005. Always verify your specific vehicle’s configuration via the owner’s manual or the vehicle’s labeling, as bulb types can vary by trim and options.