For most 2015 GMC Yukons with halogen headlights, the low-beam bulb is H11. If your Yukon is equipped with HID headlights, the low-beam bulb is a dedicated HID bulb whose exact type varies by trim and production date; verify with the vehicle’s VIN or owner's manual.
Headlight configurations on the 2015 Yukon
There are two common headlight configurations for the 2015 Yukon, and the exact bulb type depends on the setup. The following approach helps you determine the correct bulb for your specific vehicle.
- Halogen low-beam system: typically H11. This is the standard configuration on most trims with halogen lighting.
- HID projector low-beam system: uses a dedicated HID bulb; the exact bulb type (for example, D1S or D3S) varies by trim and production date. Check the vehicle’s VIN or the owner's manual to confirm the precise bulb type.
In short, the most reliable way to confirm your exact bulb size is to consult your VIN via a GM parts catalog or a dealer, or to inspect the headlight assembly labeling.
How to identify your headlight type (quick guide)
To avoid guessing, inspect the headlight setup: halogen systems typically use a simple bulb behind a plastic cover labeled with the bulb type, while HID systems rely on a ballast and a dedicated HID bulb. If you’re unsure, remove the lamp cover and read the bulb marking, or reference the owner's manual.
Practical tips for replacement
When replacing bulbs, verify compatibility with your trim level and consider upgrading to higher-quality bulbs if recommended by the manufacturer. Always handle bulbs with gloves to avoid oils from your skin transferring to the glass, and disconnect the battery before servicing the headlights.
Summary
The 2015 GMC Yukon commonly uses H11 for halogen low beams. If your vehicle has HID low beams, the exact bulb type is a dedicated HID bulb that varies by trim and production date; confirm via VIN, owner’s manual, or GM parts diagrams to source the correct replacement.