What is the low beam headlight bulb size for a 2004 Chevrolet Trailblazer?

The 2004 Chevrolet Trailblazer uses a 9006 LED bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 2004 Chevrolet Trailblazer?

The high beam bulb size for the 2004 Chevrolet Trailblazer is 9005 LED.

Why are my 2004 Chevrolet Trailblazer headlights dim?

Dim headlights on a 2004 Chevrolet Trailblazer can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a 9006 LED LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2004 Chevrolet Trailblazer fog light?

The 2004 Chevrolet Trailblazer uses a 880 LED bulb for the fog light position.

Is the 2004 Chevrolet Trailblazer single or dual beam?

The 2004 Chevrolet Trailblazer uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 2004 Chevrolet Trailblazer?

Yes, the 2004 Chevrolet Trailblazer comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a 9006 LED LED conversion kit for the low beams.

Does the 2004 Chevrolet Trailblazer have fog lights?

Yes, the 2004 Chevrolet Trailblazer takes a 880 LED bulb for the fog light position.

Did the 2004 Chevrolet Trailblazer change headlight bulb sizes from the previous year?

No — the 2004 Chevrolet Trailblazer uses the same bulb sizes as the 2003 model. This configuration has been consistent across the 2002–2005 generation.

How do I change the headlight on a 2004 Chevrolet Trailblazer?

Turn off the vehicle and open the hood. Locate the headlight assembly from behind, remove the dust cover or retaining clip, disconnect the wiring harness, twist the old 9006 LED bulb counter-clockwise to remove it, then insert the new bulb and reassemble. The whole process typically takes 10 to 30 minutes per side depending on accessibility.

Are LED headlights legal for a 2004 Chevrolet Trailblazer?

LED bulbs used off-road or in auxiliary lights are legal everywhere. For on-road headlight use, legality varies by state. Many states allow LED retrofits as long as the beam pattern meets DOT standards. For the best legal compliance, choose a DOT-approved 9006 LED LED kit that is designed as a direct replacement and produces a proper cutoff pattern without excessive glare.

How much does it cost to replace 2004 Chevrolet Trailblazer headlights?

A pair of halogen 9006 LED bulbs costs $15 to $40, while LED conversion kits run $25 to $60 per pair. If you have a shop do the work, expect an additional $20 to $50 in labor per bulb. Replacing them yourself at home saves the labor cost and usually takes under 30 minutes.

What is the difference between halogen and LED for a 2004 Chevrolet Trailblazer?

Halogen bulbs produce a warm yellow light (around 3200K), last 500 to 1000 hours, and draw more power. LED bulbs emit a brighter white light (5000-6000K), last 25,000+ hours, and use less energy. LED upgrades for the 9006 LED position are available as direct plug-and-play replacements.

The 2004 Chevrolet Trailblazer shares its bulb sizes with the 2002–2005 generation.

Fitment Guaranteed for 2004 Chevrolet Trailblazer

What Size Bulbs Does a 2004 Chevrolet Trailblazer Use?

Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.

Installation Difficulty

Easy (Plug and Play)

Est. Replacement Cost

$15 - $40 (Halogen) / $30+ (LED)

What Lighting System Does the 2004 Chevrolet Trailblazer Have?

Lighting on the 2004 Chevrolet Trailblazer is managed by a total of 14 bulbs, covering everything from primary headlights to signal indicators. It features an extensive lighting system powered by a dual-bulb halogen configuration using separate 9006 LED low beam and 9005 LED high beam bulbs for precise light distribution. This model belongs to the mid years of the Trailblazer's 2002-2009 production span.

Can You Put LED Bulbs in a 2004 Chevrolet Trailblazer?

For a Chevrolet built for the road and trail, LED upgrades provide the high-contrast lighting needed for better obstacle detection. We recommend starting your upgrade with the 9006 LED low beams, as they see the most use. Adding a matching 9005 LED LED kit later will complete the look and ensure consistent lighting performance. Don't forget the 880 LED fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

2004 Chevrolet Trailblazer Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	9006 LED	Buy 9006 LED →
High Beam	9005 LED	Buy 9005 LED →
Fog Light	880 LED	Buy 880 LED →
Brake Light	3157CK	Buy 3157CK →
Side Marker	194 LED	Buy 194 LED →
Turn Signal Front	3757AK LED	Buy 3757AK LED →
Turn Signal Rear	3157KX LED	Buy 3157KX LED →
Reverse Light	3157KX	Buy 3157KX →
Dome Light	212-2	Buy 212-2 →
License Plate	2825	Buy 2825 →
Map Light	194	Buy 194 →
Parking Light	3757AK	Buy 3757AK →
Trunk Light	212-2	Buy 212-2 →
Tail Light	3157CK	Buy 3157CK →

How do the 2004 Chevrolet Trailblazer's bulbs compare to other years?

The 2004 Chevrolet Trailblazer uses the same bulbs as the 2003 model.

The 2005 model continues with the same bulb sizes.

This bulb configuration covers the 2002–2005 model years. ← 2003 2005 →

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Other Trailblazer Years

2009 2008 2007 2006 2005 2003 2002

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