What is the low beam headlight bulb size for a 1999 Pontiac Trans Sport?

The 1999 Pontiac Trans Sport uses a 9004 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 Pontiac Trans Sport?

The high beam bulb size for the 1999 Pontiac Trans Sport is N/A.

Why are my 1999 Pontiac Trans Sport headlights dim?

Dim headlights on a 1999 Pontiac Trans Sport can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a 9004 LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 1999 Pontiac Trans Sport fog light?

The 1999 Pontiac Trans Sport uses a 880 bulb for the fog light position.

Is the 1999 Pontiac Trans Sport single or dual beam?

The 1999 Pontiac Trans Sport 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 Pontiac Trans Sport?

Yes, the 1999 Pontiac Trans Sport comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a 9004 LED conversion kit for the low beams.

Does the 1999 Pontiac Trans Sport have fog lights?

Yes, the 1999 Pontiac Trans Sport takes a 880 bulb for the fog light position.

Did the 1999 Pontiac Trans Sport change headlight bulb sizes from the previous year?

Yes — the 1999 Pontiac Trans Sport uses different bulb sizes than the 1998 model. The 1999 generation introduced this bulb configuration.

Is the 1999 Pontiac Trans Sport the first or last year to use 9004 bulbs?

The 1999 Pontiac Trans Sport is the only year in the 1999 generation to use the 9004 bulb for the low beam headlight.

How do I change the headlight on a 1999 Pontiac Trans Sport?

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 9004 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 Pontiac Trans Sport?

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 9004 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 Pontiac Trans Sport headlights?

A pair of halogen 9004 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 Pontiac Trans Sport?

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 9004 position are available as direct plug-and-play replacements.

The 1999 Pontiac Trans Sport has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 1999 Pontiac Trans Sport

What Size Bulbs Does a 1999 Pontiac Trans Sport 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 Pontiac Trans Sport Have?

The 1999 Pontiac Trans Sport utilizes a refined lighting configuration featuring 12 distinct bulb positions. It features an extensive lighting system powered by a dual-bulb halogen configuration using separate 9004 low beam and high beam bulbs for precise light distribution.

Can You Put LED Bulbs in a 1999 Pontiac Trans Sport?

Upgrading to LED is one of the most effective ways to modernize your Pontiac's appearance and safety profile. We recommend starting your upgrade with the 9004 low beams, as they see the most use. Adding a matching LED kit later will complete the look and ensure consistent lighting performance. Don't forget the 880 fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

1999 Pontiac Trans Sport Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	9004	Buy 9004 →
Daytime Running	3157CK	Buy 3157CK →
Turn Signal Front	3157CK	Buy 3157CK →
Side Marker	194	Buy 194 →
Fog Light	880	Buy 880 →
Brake Light	3157CK	Buy 3157CK →
Tail Light	3057	Buy 3057 →
Parking Light	3157CK	Buy 3157CK →
License Plate	168	Buy 168 →
Reverse Light	3156	Buy 3156 →
Turn Signal Rear	3156	Buy 3156 →
Map Light	168	Buy 168 →

How do the 1999 Pontiac Trans Sport's bulbs compare to other years?

The 1999 Pontiac Trans Sport changed bulb sizes from 1998. The previous model year used a different configuration.

This bulb configuration covers the 1999 model years. ← 1998

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Other Trans Sport Years

1998 1997 1996 1995 1994 1993 1992 1991 1990

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