Low beams are H11 and high beams are 9005. Some trims may have HID headlights (D1S/D2S) instead of halogen bulbs.
This article explains the typical bulb types used in the 2011 Chevrolet Silverado, including variations by trim and option packages, and offers guidance on how to identify the exact bulbs installed in your vehicle. It also covers common configurations for fog lights and how to confirm the correct replacement bulbs.
Standard halogen headlamps
Most 2011 Silverados came with halogen headlights. The setup uses separate bulbs for low and high beams, and fog lights (where equipped) generally use the same or a related bulb type depending on trim.
The following list shows the typical bulb types by function for standard halogen headlights on the 2011 Silverado.
- Low beam: H11
- High beam: 9005 (HB5)
- Fog lights: commonly H11, though some trims use H3
These bulbs cover the majority of 2011 Silverado configurations that came with standard halogen lighting. If your model has additional features or factory upgrades, the bulb types might differ.
Optional HID headlights
Chevrolet offered factory HID headlamps on higher trims or as part of certain packages for the 2011 Silverado. If your truck has HID, the bulbs are not H11/9005. Instead, you’ll typically find D1S or D2S bulbs paired with a ballast that powers the projector lenses.
How to confirm HID or halogen on your truck
Inspect the headlight assembly and the engine compartment for a ballast. HID setups usually have a ballast unit mounted near the headlight or in the engine bay, and the bulbs sit in a projector housing rather than a standard reflector. If you see a ballast, you likely have HID headlights. Always confirm with the owner's manual or a VIN-specific GM parts guide to ensure you purchase the correct bulbs.
What about fog lights?
Fog light bulb types vary by trim. The most common configuration for 2011 Silverados is H11 for fogs, with some packages using H3. When replacing fog bulbs, consider replacing in pairs if possible to maintain consistent illumination.
Note that market-specific or dealer-installed options may differ. Verify the exact bulb type for your vehicle by checking the owner’s manual, inspecting the headlight assembly, or contacting a GM dealer with your VIN.
Summary
In the standard 2011 Silverado, the headlights are typically halogen with low beams using H11 and high beams using 9005. Fog lights are usually H11, though some trims use H3. If your Silverado has factory HID headlights, the bulbs will be D1S or D2S and require a ballast. To be sure, check your owner’s manual, inspect the headlight housing, or consult a dealer with your VIN for the exact bulb specification.
What headlight bulb do I need for a Chevy Silverado 1500?
Chevrolet Silverado 1500 (2022-2023) Bulb Size Chart
| Headlights (Low Beam) | H11 (H8 H9) |
|---|---|
| Brake Light (Rear) | 7443 (7440) |
| Brake Light (High-Mounted) | T15 (912 921) |
| Reverse Light (Back-Up Light) | T15 (912 921) |
| Parking Light | 7443 (7440) |
What headlight bulbs does a 2011 Chevy Silverado take?
2011 Chevrolet Silverado 1500 Headlight Bulb
- Sylvania Basic Bulb H11.
- Sylvania Basic Headlight and Fog Light Bulb 9005.
- Sylvania Basic Bulb H7.
- Sylvania SilverStar Bulb H11ST-2.
- Sylvania Basic Headlight Bulb 9006.
- Sylvania XtraVision Headlight Bulb H11XV-2.
- Sylvania Basic Bulb H11.
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.
Do I need H11 or 9005?
H11 bulbs are designed for use as low beam headlights, while 9005 bulbs are typically used for high beams. This results in a higher brightness level for the 9005 bulbs compared to the H11 bulbs.