GMC Sierra 2500HD 2003 Bulb Size

Bulb size chart

Fog Light Bulb Front - 9145 LED
Headlight Bulb High Beam - 9005
Headlight Bulb Low Beam - 9006
Back Up Reverse Light Bulb - 3157
Brake Light Bulb - 3157R
Center High Mount Stop Light Bulb - 921
Daytime Running Light Bulb - 4114
License Plate Light Bulb - 194
Parking Light Bulb - 3157A
Roof Marker Light Bulb - 194
Side Marker Light Bulb Front - 194NA
Side Marker Light Bulb Rear - 194NA
Tail Light Bulb - 3157R
Turn Signal Light Bulb Front - 3157A
Turn Signal Light Bulb Rear - 3157A
Ash Tray Light Bulb - 161
Courtesy Light Bulb(Compare to original - Option 1) - 194
Courtesy Light Bulb(Compare to original - Option 2) - 2721
Dome Light Bulb(Compare to original - Option 1) - 578
Dome Light Bulb(Compare to original - Option 2) - 211-2
Engine Compartment Light Bulb - 93
Glove Box Light Bulb - 194
Map Light Bulb(Compare to original - Option 1) - 168
Map Light Bulb(Compare to original - Option 2) - 578
Trunk or Cargo Area Light - 912

9145 LED Bulbs

Used for: Fog Light Bulb Front

View all 10 replacement options for size 9145 LED →

9005 Bulbs

Used for: Headlight Bulb High Beam

View all 30 replacement options for size 9005 →

9006 Bulbs

Used for: Headlight Bulb Low Beam

PIAA 19616 9006 (HB4) Xtreme White Plus

PIAA 19616 9006 (HB4) Xtreme White Plus

The Xtreme White Plus Series of high output replacement bulbs give drivers better color recognition, depth perception, and improved contrast over stock halogen lights. These lamps feature a crisp white light that allows you to see the road well in front or behind your vehicle while also meeting DOT specifications for safety on America’s roads today! With its 4000K color temperature, it adds style with ease - just what we look forward to each day when driving around town.

$61.57

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Sinoparcel 9006/HB4 Halogen Low Beam Headlight or Fog Light Bulb

Sinoparcel 9006/HB4 Halogen Low Beam Headlight or Fog Lig...

Upgrade your night driving with Sinoparcel 9006/HB4 Halogen Headlight Bulbs, designed for superior visibility and easy installation. With 55 watts of power and 1300 lumens, these bulbs provide a 360° light pattern, ensuring clear illumination on all sides. The 3800K color temperature delivers crisp, clear light, perfect for safe driving in all weather conditions. Installation is quick and tool-free, taking less than 10 minutes. Sinoparcel's bulbs are street legal, durable, and built to last with an IP67 rating. Enhance your driving experience–upgrade today for brighter, safer journeys.

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Nokya Arctic White 9006 Headlight Bulb

Nokya Arctic White 9006 Headlight Bulb

Experience a higher level of visibility with the Nokya Arctic White 9006 Headlight Bulb, merging advanced performance with style. These xenon-halogen hybrid bulbs emit a 7000 Kelvin Arctic White light for a high-intensity, modern glow that is sure to revolutionize the way one drives. They are great for drivers who want safety and fashion on the road due to their great luminous intensity and stylish color. The Nokya Arctic White bulbs have a strong 80-watt output that provides real brightness equal to 100 watts for unparalleled clarity in low-light and nighttime conditions. Whether you're driving down winding roads, poorly lit streets, or through inclement weather, these bulbs give you improved visibility so you can recognize road obstacles and road signs sooner and react faster and safer. This Arctic White light output provides not only better visibility but also a touch of sophistication to your car's look. The cool, xenon-inspired glow of this light emulates high-end headlights-gracing your car with a modern and polished appearance on the road. These are precision-made bulbs by the trusted name Nokya when it comes to automotive lighting. Constructed to be durable and long-lasting, the 9006 model of the HB4 series integrates well into your vehicle's headlight assembly. This package will conveniently contain two bulbs for ease of replacement.

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3157 Bulbs

Used for: Back Up Reverse Light Bulb

Alla Lighting 3157 Red LED Bulbs (Brake, Tail Lights, Turn Signal)

Alla Lighting 3157 Red LED Bulbs (Brake, Tail Lights, Tur...

Product benefits and features: Each bulb is quipped with 39pcs high power and high illumination 2835 SMD LEDs; Built-in smart IC driver for stable current control and longer lifespan; Equipped with projector-lens for fully 360° light output. Equipped with aluminum heat sink for the best heat dissipation. Especially designed for replacing back-up reverse lights, turn signal lights, brake tail lights, daytime running lights(DRL) lamps.

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KAKEMONO 3157 LED Amber Yellow Light Bulb

KAKEMONO 3157 LED Amber Yellow Light Bulb

Improve your car's lighting with the brilliant combination of brightness, energy efficiency, and broad compatibility offered by KAKEMONO BrightBeam 3157 LED Amber Yellow Bulbs. Built for multiple functions, these bulbs perform expertly to promise safety and style in each ride. BrightBeam LED bulbs are good for brake lights, turn signals, reverse lights, tail lights, and much more. Amber yellow in color and with a bright 400 lumens output, it gives better visibility and makes your vehicle more noticeable to others to improve safety on the road. Replacing traditional 40W halogen bulbs, these 4W LED bulbs reduce power consumption by a large margin while keeping very good brightness. Ceramic and aluminum housing allows for efficient heat dissipation, contributing to a longer lifespan and consistent performance over time. With a wide voltage input range of AC10-18V/DC10-30V, they are stable and work well on different vehicle models. They boast a 360° beam angle with no dark spots, providing super uniform light distribution. Plug-and-play installation, besides, makes upgrading your lighting a breeze. Note that some vehicles may require a load resistor to prevent hyper-flashing or dashboard error codes.

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View all 12 replacement options for size 3157 →

3157R Bulbs

Used for: Brake Light Bulb, Tail Light Bulb

Sylvania Zevo LED Red Bulb

Sylvania Zevo LED Red Bulb

SYLVANIA ZEVO LED bulbs deliver a brighter, whiter, sharper light. As easy as changing a light bulb, you can have improved performance and safety for interior and exterior applications. World-class manufacturing and high-quality materials guarantee a lifetime warranty on your ZEVO bulbs. LED bulbs used for turn signals may require the use of load resistors to ensure appropriate power is supplied to the bulbs and prevent hyper flashing.  Delivers A Brighter and Sharper Light: This is a RED LED bulb – Ideal for stop and tail lights.

$19.75

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View all 13 replacement options for size 3157R →

921 Bulbs

Used for: Center High Mount Stop Light Bulb

View all 14 replacement options for size 921 →

4114 Bulbs

Used for: Daytime Running Light Bulb

Philips Automotive 4114 Ultinon LED Bulb

Philips Automotive 4114 Ultinon LED Bulb

Revamp your car's style with Philips Automotive 4114 Ultinon LED Bulbs - the ultimate lighting upgrade! These LEDs are a breeze to install, replacing old bulbs effortlessly. Inside, enjoy a choice of cool blue or high-tech 6000K white light for a sleek interior. No more searching in the dark; these LEDs provide uniform, bright illumination. Outside, enhance your signaling lights with intense reds and vibrant ambers for added style and safety. Their instant-on feature ensures you're seen immediately, improving road safety. The best part? Philips Ultinon LEDs are built to last, with a lifespan of up to 8 years. Say goodbye to constant bulb replacements. They combine high power with resistance to heat and vibration for long-lasting performance.

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View all 12 replacement options for size 4114 →

194 Bulbs

Used for: License Plate Light Bulb, Roof Marker Light Bulb, Courtesy Light Bulb(Compare to original - Option 1), Glove Box Light Bulb

View all 21 replacement options for size 194 →

3157A Bulbs

Used for: Parking Light Bulb, Turn Signal Light Bulb Front, Turn Signal Light Bulb Rear

TUINCYN 3157A LED Amber Bulb

TUINCYN 3157A LED Amber Bulb

Standard 3157 LED Bulb Lamp with 5630 33SMD High Power LEDs, Brighter than Normal Incandescent Bulbs. Cross-Compatibility: Fits 3047, 3057, 3057A, 3155, 3157, 3157A, 3157NA, 3357, 3357A, 3454NA, 3457, 3457A, 3457NA, 3757A, 3156, 3056, 3356, 3456, 4156, 4057, 4114, 4157, 4157NA, 5702A, 5702AK Used for Tail Lights, Brake Lights, Reverse Lights, Turn Signals Lights, Side Marker Lights, Rear Light, Stop Lamp, Backup Lights, etc. Easy to install, plug and play bulb, no wiring needed. Point-to-point welding, the light body structure and firm, not easy to damage. 360 Degree Beam Angle design lights up every corner. Faster on/off response time.

$13.99

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AUXITO LED Turn Signal Light Bulbs 3157 LED Bulbs Amber Yellow

AUXITO LED Turn Signal Light Bulbs 3157 LED Bulbs Amber Y...

Non-polarity. Can be used for front rear turn signal light, side marker light, blinker light, parking light, daytime running light, brake light, tail light, etc. When these 3157 led amber bulbs are used for turn signal lights or blinker lights, some vehicles may meet canbus issues, such as flicker, hyper flash or error warning, etc, load resistors or flasher relay may be required to solve the issues, you can contact us through Amazon Buyer Message to get help and solutions

$16.19

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Philips 3157A LLB2 Miniature Bulb

Philips 3157A LLB2 Miniature Bulb

The Philips 3157A LLB2 miniature bulb is a halogen bulb that provides twice the life of standard incandescent bulbs. It has a long-life rating of 2,500 hours and is used in many applications such as headlamps, turn signal lights, license plate lights and marker lamps. The Miniature Bulb by Philips is an original equipment quality seal for the most reliable performance. Always replace in pairs to ensure a symmetric light beam from both bulbs on the road. Bulbs dim over time. This package contains two miniature bulbs with one year warranty.

$5.76

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194NA Bulbs

Used for: Side Marker Light Bulb Front, Side Marker Light Bulb Rear

Marsauto 194 LED Light Bulbs Amber Yellow

Marsauto 194 LED Light Bulbs Amber Yellow

Introducing the Marsauto 194 LED Light Bulbs in Amber Yellow, the perfect lighting solution for your car's various applications. With their impressive brightness and ease of installation, these bulbs will stay with you all the time, providing enhanced visibility and style.Experience a super bright light output with the Marsauto 194 LED Light Bulbs. With 200 lumens of brightness, these bulbs ensure excellent visibility in a variety of applications. Whether you need them for map lights, dome lights, license plate lights, dashboard instruments, trunk lights, or courtesy lights, these bulbs will illuminate your vehicle with a vibrant amber yellow glow. Installation is a breeze with the Marsauto 194 LED Light Bulbs. With their user-friendly design, you can easily install them in just 3 minutes. Simply remove your old bulbs and replace them with the Marsauto LEDs for an instant upgrade. There's no need for complex wiring or modifications – it's a hassle-free process that anyone can do. The Marsauto 194 LED Light Bulbs will stay with you all the time, providing reliable and long-lasting performance. Whether you're driving during the day or night, these bulbs will consistently deliver the illumination you need. You can count on them to enhance your visibility and add a touch of style to your vehicle's interior and exterior lighting. Upgrade your car's lighting system with the Marsauto 194 LED Light Bulbs in Amber Yellow and enjoy enhanced brightness, easy installation, and versatile applications. With their super bright light output, quick installation, and compatibility with various car lighting functions, these bulbs are the perfect choice for improving your driving experience. Trust Marsauto for high-quality lighting solutions that will exceed your expectations.

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Alla Lightning 194NA LED Amber Bulbs

Alla Lightning 194NA LED Amber Bulbs

Each bulb is quipped with 18pcs high power and high illumination 3014 SMD LEDs; Built-in smart IC driver for stable current control and longer lifespan; Each bulb is about 240 lumens, fully 360° light output. More than 400% brighter than stock lamps. Equipped with aluminum heat sink for the best heat dissipation. Especially designed for license plate lights, side marker lights, parking lights, interior map, dome, trunk, door courtesy, stepwell lights lamps.

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View all 12 replacement options for size 194NA →

161 Bulbs

Used for: Ash Tray Light Bulb

View all 12 replacement options for size 161 →

2721 Bulbs

Used for: Courtesy Light Bulb(Compare to original - Option 2)

Jtech 10 x T5 LED White Bulbs

Jtech 10 x T5 LED White Bulbs

The Jtech 10 x T5 LED White Bulbs are a direct replacement for all T5 Wedge Type 17 18 27 37 58 70 73 74 79 85 86 2721. They operate on a 12V input and emit bright white light with no UV or IR radiation. With an average lifespan of 50000 hours and LED SMD5050 (3chip) x 1P, these bulbs provide a long-lasting and reliable lighting solution. Jtech is known for providing superior product quality and service, making these britelites a popular choice among customers worldwide. Despite the presence of cheaper chipsets and modules on the market, these bulbs stand out for their exceptional performance and affordability.

$6.99

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View all 10 replacement options for size 2721 →

578 Bulbs

Used for: Dome Light Bulb(Compare to original - Option 1), Map Light Bulb(Compare to original - Option 2)

KATUR Festoon 578 (C5W) Led Bulbs

KATUR Festoon 578 (C5W) Led Bulbs

The KATUR Festoon 578 (C5W) Led Bulbs are a great choice for those looking to upgrade their car's lighting. With lower power consumption and a longer lifespan, these bulbs are more efficient and long-lasting than traditional incandescent bulbs. The fast light response and safe design of these bulbs make them a reliable choice for drivers. The high power 3014 chips and 180-degree illumination angle ensure there are no blind spots and provide bright, renewed lighting for your car. All LED Series products come in a static sealed bag for long-term preservation and are error-free with CANBUS technology. Choose the KATUR Festoon 578 (C5W) Led Bulbs for a brighter and more efficient car lighting solution.

$14.99

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211-2 Bulbs

Used for: Dome Light Bulb(Compare to original - Option 2)

KATUR 211-2 Festoon C5W LED Light Bulb

KATUR 211-2 Festoon C5W LED Light Bulb

Enjoy the benefits of lower power consumption and long-lasting performance with the KATUR 211-2 Festoon C5W LED Light Bulb. This energy-efficient bulb not only reduces your vehicle's power usage but also ensures a longer lifespan, saving you money on replacements and maintenance costs. Experience peace of mind knowing that this bulb is safe to use and designed to provide reliable and consistent lighting. Every LED Series product from KATUR comes in a static sealed bag, ensuring long-term preservation and protection. This packaging solution guarantees that your bulb remains in pristine condition until it's ready to be installed. Experience the convenience of having a high-quality bulb at your fingertips whenever you need it. Prepare to be amazed by the super brightness of the KATUR 211-2 Festoon C5W LED Light Bulb. Equipped with high-power 3014 chips, this bulb emits a powerful and intense light output that will instantly refresh the look of your car. The 180-degree illumination angle ensures a wide coverage area, eliminating any blind spots and providing a well-lit environment. Say goodbye to outdated and dim lighting, and embrace the renewed new look that the KATUR 211-2 Festoon C5W LED Light Bulb brings to your vehicle. Whether you're upgrading your interior or exterior lighting, this bulb is designed to deliver outstanding brightness and clarity. Enhance your visibility on the road and turn heads with the vibrant illumination that this bulb provides.

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Ruiandsion LED Festoon Bulbs 211-2

Ruiandsion LED Festoon Bulbs 211-2

Experience a cool and comfortable lighting experience with the Ruiandsion LED Festoon Bulbs 211-2. Thanks to its low working temperature and superior heat dissipation capabilities, this bulb ensures optimal performance and longevity. Say goodbye to overheating issues and enjoy a reliable and efficient lighting solution. Installing the Ruiandsion LED Festoon Bulbs 211-2 is a breeze and can be done in just minutes, without the need for any tools. Simply plug and play, and you'll have brilliant illumination in no time. Upgrade your vehicle's lighting system effortlessly and enjoy the convenience of hassle-free installation. Equipped with high-quality 3528 SMD chips, this bulb features 16 pieces of powerful LED chipset per lamp, ensuring a much brighter output compared to the original bulbs. The aluminum body design enhances heat dissipation, further improving the bulb's performance and longevity. With its 360-degree lighting angle, the Ruiandsion LED Festoon Bulbs 211-2 provide comprehensive illumination, eliminating any dark spots and ensuring a uniform lighting experience. Enjoy a well-lit environment that enhances visibility and adds a touch of elegance to your vehicle's interior. Prepare to enjoy long-lasting performance with a service life of up to 50,000 hours. The Ruiandsion LED Festoon Bulbs 211-2 are built to last, offering you reliable and consistent lighting for countless journeys. Experience peace of mind knowing that these bulbs will illuminate your vehicle for years to come.

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View all 12 replacement options for size 211-2 →

93 Bulbs

Used for: Engine Compartment Light Bulb

View all 9 replacement options for size 93 →

168 Bulbs

Used for: Map Light Bulb(Compare to original - Option 1)

View all 17 replacement options for size 168 →

912 Bulbs

Used for: Trunk or Cargo Area Light

Senzeal 912 LED White Bulb

Senzeal 912 LED White Bulb

Upgrade your vehicle’s reverse lighting with Senzeal T15 LED Bulbs, delivering powerful illumination exactly where you need it. Perfect for all car models requiring T15, 912, or 921 bulbs, these LEDs are the ideal replacement for your reverse lights, providing a significant boost in brightness and safety. With just 3 watts of power, these bulbs produce an impressive 180 lumens of crisp 6000K white light, making them brighter and more efficient than traditional halogen bulbs. Built with high-power 3030 SMD chips and a 360-degree lighting angle, they ensure no blind spots and provide fuller, more consistent illumination. Designed for easy installation, these plug-and-play bulbs are compatible with 98% of vehicles, thanks to their built-in CANBUS system. The intelligent temperature control driver and PC light cover protect the LED chips, extending the bulb’s lifespan and ensuring reliable performance.

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View all 14 replacement options for size 912 →

This 2003 GMC Sierra 2500HD bulb size page helps you verify the correct bulbs by lighting position, so you can match the right part before you buy. Whether you are replacing a headlight, tail light, interior lamp, or marker light, checking the bulb chart by location is the easiest way to avoid fitment mistakes on this truck.

The 2003 GMC Sierra 2500HD can use different bulb setups depending on trim, body style, and lighting package. That is why this page lists the common bulb sizes for each lamp position, including low and high beams, turn signals, brake lights, dome lights, license plate lights, and cargo-area lighting.

For best results, compare the bulb listed here with the one already installed in your truck before ordering, especially if your Sierra has been modified or converted to aftermarket lighting. Some positions may be halogen from the factory while others may have LED replacements or different socket styles from previous repairs. Trim and package differences can also affect fitment, so it is smart to confirm the original bulb number, check the connector, and make sure the replacement matches both the base and the light output you want.

FAQ

What is the low beam bulb size for a 2003 GMC Sierra 2500HD?

The low beam headlight bulb size listed for the 2003 GMC Sierra 2500HD is 9006.

What bulb does the high beam headlight use on this truck?

The high beam headlight bulb size listed is 9005.

What are the front turn signal and parking light bulb sizes?

Both the front turn signal light and the parking light use 3157A bulbs on this page.

What bulb size is used for the rear turn signal and tail light?

The rear turn signal light and tail light are listed as 3157R bulbs.

What is the brake light bulb size for the 2003 Sierra 2500HD?

The brake light bulb size listed is 3157R.

What bulb fits the center high mount stop light?

The center high mount stop light bulb size listed is 921.

What is the reverse light bulb size?

The back up reverse light bulb size listed is 3157.

What bulb size is used for the license plate light?

The license plate light bulb size listed is 194.

What are the side marker bulb sizes?

The front side marker light uses 194NA, and the rear side marker light also uses 194NA.

What bulb fits the fog lights on this page?

The front fog light bulb is listed as 9145 LED.

What are the common interior bulb sizes for map, dome, and courtesy lights?

This page lists several interior options depending on the lamp position: map light can be 168, 578, or another listed option; dome light can be 578 or 211-2; courtesy light can be 194 or 2721.

Why does the page show more than one bulb option for some interior lights?

Some interior locations can vary by cab style, trim, or original lamp assembly. The page includes the listed options so you can compare the installed bulb and choose the correct match.

Does the 2003 GMC Sierra 2500HD use the same bulb in every trim?

Not always. Trim level, body style, and lighting package can change the bulb used in certain positions, so it is best to verify by location and compare the installed bulb before purchase.

Should I switch to LED bulbs when replacing factory bulbs?

You can, but the replacement should match the socket and fitment requirements. Some positions may need LED-specific choices or additional attention to brightness, beam pattern, or compatibility with the vehicle's lighting setup.

GMC Sierra 2500HD Bulb Size by Year