What is the low beam headlight bulb size for a 1999 GMC Envoy?

The 1999 GMC Envoy 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 1999 GMC Envoy?

The high beam bulb size for the 1999 GMC Envoy is 9005 LED.

Why are my 1999 GMC Envoy headlights dim?

Dim headlights on a 1999 GMC Envoy 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 1999 GMC Envoy fog light?

The 1999 GMC Envoy uses a 880 LED bulb for the fog light position.

Is the 1999 GMC Envoy single or dual beam?

The 1999 GMC Envoy uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 1999 GMC Envoy?

Yes, the 1999 GMC Envoy 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 1999 GMC Envoy have fog lights?

Yes, the 1999 GMC Envoy takes a 880 LED bulb for the fog light position.

How do I change the headlight on a 1999 GMC Envoy?

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 1999 GMC Envoy?

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 1999 GMC Envoy 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 1999 GMC Envoy?

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.

This vehicle is part of the 1998–2001 GMC Envoy generation. All models in this range share identical light bulb sizes.

Fitment Guaranteed for 1999 GMC Envoy

What Size Bulbs Does a 1999 GMC Envoy 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 1999 GMC Envoy Have?

Lighting on the 1999 GMC Envoy is managed by a total of 12 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 early years of the Envoy's 1998-2009 production span.

Can You Put LED Bulbs in a 1999 GMC Envoy?

For a GMC 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.

1999 GMC Envoy 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	Brake Light Assembly	Buy Brake Light Assembly →
Side Marker	194NA	Buy 194NA →
Turn Signal Front	3157A	Buy 3157A →
License Plate	194	Buy 194 →
Map Light	168 or 211-2	Buy 168 or 211-2 →
Parking Light	3157A	Buy 3157A →
Turn Signal Rear	3057	Buy 3057 →
Reverse Light	3156	Buy 3156 →
Trunk Light	211-2	Buy 211-2 →