What size headlight bulb for a 2012 Chevy Traverse?

For a 2012 Chevy Traverse, the standard headlight bulbs are H11 for the low beams and 9005 for the high beams.

This article explains the correct bulb sizes, how to identify them in your specific vehicle, and tips for replacement. It also notes common variations by trim and cautions about aftermarket upgrades such as LEDs or HID conversions.

Bulb sizes by function

Note: The sizes listed below apply to the typical 2012 Traverse with factory halogen headlights. If your vehicle has a nonstandard option package, verify with the owner's manual or a parts diagram for your exact VIN.

• Low beam: H11 (55W halogen)


• High beam: 9005 (HB3, 65W halogen)

Bottom line: In most 2012 Traverse models with halogen headlights, use H11 for the low beams and 9005 for the high beams. If you’re seeing different numbers, or if your vehicle has undergone aftermarket lighting, confirm with the manual or a professional.

Considerations for aftermarket replacements

Several caveats apply when considering alternatives to factory halogen bulbs. LED and HID conversions can require additional wiring, ballast installation, and beam pattern adjustments to avoid glare for oncoming traffic. The 2012 Traverse generally did not come with factory HID headlights, so aftermarket upgrades can be more complex and may affect warranty or compliance in some regions.

Additionally, fog lights, if equipped, may use different bulb sizes (often H16 or H11, depending on trim and region). Always verify the fog light bulb size separately if you need to replace those as well.

How to confirm bulb size on your vehicle

To verify the exact bulb sizes for your specific Traverse, follow these steps:

1. Check the owner's manual or the factory bulb diagram located in the trunk or under the hood near the headlight assembly.


2. Inspect the bulb in the headlight housing for size markings or part numbers.


3. Consult a parts retailer or GM dealership with your vehicle’s VIN for an exact match.

Using these steps will help you source the correct bulbs for your particular vehicle configuration and avoid mismatches.

Summary

For a typical 2012 Chevy Traverse with halogen headlights, the recommended bulb sizes are H11 for low beams and 9005 for high beams. Confirm with your owner’s manual or a dealer if you have a special trim or aftersales modification. When replacing bulbs, handle them carefully, avoid touching the glass, and consider professional installation if you are planning any aftermarket lighting upgrades.