What is the low beam headlight bulb size for a 2016 GMC Sierra 2500-3500?

The 2016 GMC Sierra 2500-3500 uses a N/A bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 2016 GMC Sierra 2500-3500?

The high beam bulb size for the 2016 GMC Sierra 2500-3500 is N/A.

Why are my 2016 GMC Sierra 2500-3500 headlights dim?

Dim headlights on a 2016 GMC Sierra 2500-3500 can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a N/A LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2016 GMC Sierra 2500-3500 fog light?

The 2016 GMC Sierra 2500-3500 uses a H16 bulb for the fog light position.

Is the 2016 GMC Sierra 2500-3500 single or dual beam?

The 2016 GMC Sierra 2500-3500 uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 2016 GMC Sierra 2500-3500?

Yes, the 2016 GMC Sierra 2500-3500 comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a N/A LED conversion kit for the low beams.

Does the 2016 GMC Sierra 2500-3500 have fog lights?

Yes, the 2016 GMC Sierra 2500-3500 takes a H16 bulb for the fog light position.

Did the 2016 GMC Sierra 2500-3500 change headlight bulb sizes from the previous year?

Yes — the 2016 GMC Sierra 2500-3500 uses different bulb sizes than the 2014 model. The 2016 generation introduced this bulb configuration.

Is the 2016 GMC Sierra 2500-3500 the first or last year to use N/A bulbs?

The 2016 GMC Sierra 2500-3500 is the only year in the 2016 generation to use the N/A bulb for the low beam headlight.

How do I change the headlight on a 2016 GMC Sierra 2500-3500?

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 N/A 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 2016 GMC Sierra 2500-3500?

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 N/A 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 2016 GMC Sierra 2500-3500 headlights?

A pair of halogen N/A 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 2016 GMC Sierra 2500-3500?

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 N/A position are available as direct plug-and-play replacements.

The 2016 GMC Sierra 2500-3500 has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 2016 GMC Sierra 2500-3500

What Size Bulbs Does a 2016 GMC Sierra 2500-3500 Use?

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

Installation Difficulty

Moderate (Dust covers often present)

Est. Replacement Cost

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

What Lighting System Does the 2016 GMC Sierra 2500-3500 Have?

The 2016 GMC Sierra 2500-3500 utilizes a refined lighting configuration featuring 7 distinct bulb positions. It features a standard lighting system powered by a dual-bulb halogen configuration using separate low beam and high beam bulbs for precise light distribution.

Can You Put LED Bulbs in a 2016 GMC Sierra 2500-3500?

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 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 H16 fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

2016 GMC Sierra 2500-3500 Bulb Size Chart

Position	Bulb Size	Shop
Fog Light	H16	Buy H16 →
Turn Signal Front	7443	Buy 7443 →
Parking Light	7443	Buy 7443 →
Side Marker	194	Buy 194 →
License Plate	W5W	Buy W5W →
Reverse Light	921	Buy 921 →
Brake Light	921	Buy 921 →

How do the 2016 GMC Sierra 2500-3500's bulbs compare to other years?

The 2016 GMC Sierra 2500-3500 changed bulb sizes from 2014. The previous model year used a different configuration.

This bulb configuration covers the 2016 model years. ← 2014

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Other Sierra 2500-3500 Years

2014 1999