The typical configuration for a 2012 GMC Sierra is low-beam H11 and high-beam 9005 bulbs. However, some trims and options (like HID or LED headlights) can differ, so it's important to verify for your specific truck.
The 2012 GMC Sierra uses separate bulbs for low and high beams. While most models stock halogen bulbs, certain trims with projector headlights or factory HID setups may not use the standard halogen bulbs, and some models' fog lights can vary as well. The following guide covers the common halogen configuration and how to confirm the exact sizes on your vehicle.
Typical bulb sizes for the 2012 GMC Sierra
Use this as a quick reference for the most common configurations. Exact sizes can vary by trim, region, or factory options.
- Low beam: H11 (55W)
- High beam: 9005 (HB5, 65W)
- Fog lights: commonly H11, but some trims may use 9006 or H16
These sizes reflect the standard halogen setup found on many 2012 Sierra models. If your truck uses HID or LED headlights, these bulb sizes won't apply, and replacement work may require different bulbs or professional service.
How to confirm the exact bulb size for your vehicle
To be certain you purchase the correct bulbs, check the owner's manual, inspect the existing bulbs, or look at the headlight housing label or door jamb sticker that lists bulb sizes. If needed, use an online bulb finder by entering your year, make, model, and trim, or contact a GMC dealership for confirmation.
Handle bulbs with care and avoid touching glass with bare fingers, especially for halogen bulbs, as oils can shorten bulb life. If your Sierra uses factory HID or LED headlights, replacing bulbs may involve ballast modules or assemblies rather than simple halogen bulbs.
Summary
For most 2012 GMC Sierra pickups, plan for H11 low-beam bulbs and 9005 high-beam bulbs, with fog lights commonly using H11. Always verify the exact sizes for your specific trim and lighting setup, particularly if your truck has HID, LED, or non-standard fog lighting.
What headlight bulbs does my 2012 GMC Sierra 1500 take?
GMC Sierra 1500 LED/HID Bulb Size Summary
| Year Range | 2007, 2008, 2009, 2010, 2011, 2012, 2013 |
|---|---|
| Low Beam Headlights | H11 (H8/H9) |
| Low Beam Headlights** | 9006 (HB4)** |
| High Beam Headlight | 9005 (HB3) |
| Fog Light | 5202 (PS24W) |
Is 9005 or 9006 the low beam?
Wattage: 9005 comes in 65 watts while 9006 comes in 55 watts. Application: 9005 is most commonly used in high beams (brights) whereas 9006 is used in fog lights and low beams (dims)
Are H11 and 9005 the same bulb?
Difference between these bulbs will be the O-ring on the base. H11 on the left side will have a big pronounced O-ring on the base of the bulb versus the 9005.
Is H11 the high or low beam?
Beam Type. H11 bulbs are frequently used for low beam headlights and fog lights. On the other hand, 9005 bulbs are commonly used for high beam headlights, providing a wider and more extensive range of visibility.