The typical 2013 GMC Terrain with halogen headlights uses H11 for low beams, 9005 for high beams, and H11 for fog lights. If your Terrain is equipped with factory HID headlights, the bulbs are different and should be confirmed from the manual or labeling on the headlight assembly.
Headlight bulb configurations can vary by trim and region, and some models may have optional HID (xenon) headlights. This article outlines the standard halogen setup commonly found on 2013 Terrain models, and provides guidance for identifying if your vehicle uses an HID system instead.
Halogen headlight setup (typical for 2013 GMC Terrain)
Most 2013 Terrain models with halogen headlights use the following bulb types for each function. Use the list below to confirm the correct bulb when replacing.
- Low beam: H11
- High beam: 9005 (HB3)
- Fog lights: H11
Always verify with your vehicle’s manual or the bulb label under the hood, as some trims or regional variants may differ.
Headlights with factory HID option
Some 2013 Terrain models were equipped with HID (xenon) headlights. In those cases, the low-beam bulbs are HID units, typically D1S or D3S types, depending on the ballast installed. High beams and fog lights, if present, may use separate halogen bulbs or specific HID components as configured by the factory. If your vehicle has HID headlights, refer to the manual or contact a dealership for the exact bulb specification and replacement procedure.
Note: There is variation by trim and region; the safest step is to check the current bulb or the owner's manual. Also, consider having a professional perform replacements to avoid damaging the ballast or wiring.
How to identify your bulb type quickly
You can identify the correct bulb type by one of these methods:
- Inspect the bulb footprint and base shape on the bulb you remove from the headlight.
- Look for a label on the headlight assembly or in the owner's manual under "Light Bulbs."
- Cross-check the VIN with GM parts catalogs or consult an automotive parts retailer.
Concluding note: If you’re unsure, a quick call to a GMC dealer or an experienced mechanic can prevent mistakes and ensure you get the right bulb for your exact vehicle configuration.
Summary: For most 2013 GMC Terrain models with halogen headlights, use H11 for low beams, 9005 for high beams, and H11 for fog lights. If your Terrain has HID headlights, expect D1S or D3S low-beam bulbs instead, with other functions specified by the trim. Always confirm with the manual or by inspecting the current bulb.