2018 GMC Sierra 3500HD Bulb Size Chart

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Headlight Bulb High Beam and Low Beam - D5S

Fog Light Bulb Front - 5202 LED
Center High Mount Stop Light Bulb - 921

Brake Light Bulb - 7444
Turn Signal Light Bulb Front - 7443A
License Plate Light Bulb - 2825

Parking Light Bulb - 7443

Tail Light Bulb - 7444
Turn Signal Light Bulb Rear - 7444NA
Back Up Reverse Light Bulb - 921

Side Marker Light Bulb Rear - 194NA
Vanity Mirror Light Bulb - 6612F
Trunk or Cargo Area Light - 921


2018 GMC Sierra 3500HD High and Low Beam bulb size - D5S

    Xenon HID Conversion Kit

  • Best Choice

    Philips D5S Standard Authentic Xenon

    • Get up to 200% more vision on the road.
    • Consumes less energy and enhances visibility on the road.
    • Original equipment quality with an Electronic high voltage starter and ballast integrated into the base of this innovative design.
    • DOT compliant with precise light distribution.
  • See More D5S Xenon HID Conversion Kit

2018 GMC Sierra 3500HD Center Stop bulb size - 921

    LED Lights

  • Premium Pick

    Philips Automotive Lighting 921WLED Ultinon LED (White)

    You want bright, stylish lighting for your car but you don’t want to keep replacing burned-out bulbs. Philips Ultinon LED lights to give you high-powered, automotive-grade LEDs, with a lifetime of up to 8 years. With conventional bulbs, the more powerful the light, the shorter its lifespan. Philips Ultinon LEDs...

  • Popular

    AUXITO LED High Power 2835 15-SMD Chipsets

    – Energy-Saving, low power consumption for longer life span.
    – Suit for Socket: T15, 912, 921, 906, 904, 902, 922, W16W, just plug and play without modification. ONLY used for backup reverse lights
    – 6W per bulb, 12-16V Wide voltage, 500Ma current
    – 300% Brighter: Each bulb has 15 pieces high...

  • See More 921 LED Lights

2018 GMC Sierra 3500HD License Plate bulb size - 2825

    LED Lights

  • For Car Dome, Map Door, Courtesy, License Plate Lights

    Marsauto LED Light Bulb 6000K Replacement Bulbs

    – Better beam pattern: each bulb has 5 pcs high power SMD led, color temperature: 6000K(xenon white), voltage: 12V
    – No polarity no flip: it is truly no polarity, can light on two sides, no need more modification or flip, plug and play, easy install within 5 minutes. 

    Products with electrical...

  • Premium Pick

    Sylvania White Mini Bulb

    SYLVANIA LED bulbs deliver a balanced combination of performance and value. Tuners and auto enthusiasts alike can replace their vehicle’s incandescent lights with a bright and long-lasting LED bulb for a unique and modern look simply and cost-effectively. 

  • See More 2825 LED Lights

2018 GMC Sierra 3500HD Parking bulb size - 7443

    LED Lights

  • AUXITO 1400 Lumens Super Bright

    – Each bulb has 102 pcs high power 4014 led chips, with HD projector, stronger light penetration.
    – 360 Degree lighting ensures optimal visibility, hollow inner body design better for heat dissipation.
    – AUXITO 7443 led bulbs utilize newest powerful and high quality 3030SMD led chips. Generating 300% brighter output...

  • See More 7443 LED Lights

2018 GMC Sierra 3500HD Back Up bulb size - 921

    LED Lights

  • Premium Pick

    Philips Automotive Lighting 921WLED Ultinon LED (White)

    You want bright, stylish lighting for your car but you don’t want to keep replacing burned-out bulbs. Philips Ultinon LED lights to give you high-powered, automotive-grade LEDs, with a lifetime of up to 8 years. With conventional bulbs, the more powerful the light, the shorter its lifespan. Philips Ultinon LEDs...

  • Popular

    AUXITO LED High Power 2835 15-SMD Chipsets

    – Energy-Saving, low power consumption for longer life span.
    – Suit for Socket: T15, 912, 921, 906, 904, 902, 922, W16W, just plug and play without modification. ONLY used for backup reverse lights
    – 6W per bulb, 12-16V Wide voltage, 500Ma current
    – 300% Brighter: Each bulb has 15 pieces high...

  • See More 921 LED Lights

2018 GMC Sierra 3500HD Trunk Area bulb size - 921

    LED Lights

  • Premium Pick

    Philips Automotive Lighting 921WLED Ultinon LED (White)

    You want bright, stylish lighting for your car but you don’t want to keep replacing burned-out bulbs. Philips Ultinon LED lights to give you high-powered, automotive-grade LEDs, with a lifetime of up to 8 years. With conventional bulbs, the more powerful the light, the shorter its lifespan. Philips Ultinon LEDs...

  • Popular

    AUXITO LED High Power 2835 15-SMD Chipsets

    – Energy-Saving, low power consumption for longer life span.
    – Suit for Socket: T15, 912, 921, 906, 904, 902, 922, W16W, just plug and play without modification. ONLY used for backup reverse lights
    – 6W per bulb, 12-16V Wide voltage, 500Ma current
    – 300% Brighter: Each bulb has 15 pieces high...

  • See More 921 LED Lights

If you require a substitute bulb for just about any area of your own motor vehicle, explore the ultimate table to find out proper 2018 GMC Sierra 3500HD bulb size. Factory headlights back out after a while, and the genuine longevity is determined by the technologies employed and the standard of the bulbs. This is an excellent time to take into account converting to a more smart lighting option. Our 2018 GMC Sierra 3500HD bulb chart helps determine the correct bulb for almost any plug of the motor vehicle, whether it be headlights, fog lights, daytime running lights, back-up reverse lights, side markers, and so on.

We strongly suggest swapping the donned factory lights with first-rate LED alternatives since they offer a prolonged life-time, better brightness, and a broader selection of shades. On the flip side, custom HID headlight kits are even much more exclusive option making your car stand out from the crowd by underlining the outstanding features from the car's front.

Understand that cars of the same production year are offered in several trims, and small dissimilarities may happen in bulb types for the same place. To help make your life a little much easier, we have carefully chosen the bulbs accurately complementing 2018 GMC Sierra 3500HD and the most beneficial choices with regards to high quality, recognition, cost, and life expectancy.

GMC Sierra 3500HD Bulb Chart By Years