Last updated: September 30, 2022
In this guide, we'll help you quickly and easily find the replacement bulb size(s) you need for your 1999, 2000, 2001, 2002, 2003, 2004, 2005, and 2006 Chevy Silverado (1st Generation). From the headlights to the brake lights and everything in between.
This guide covers all sub-models and trims (LS, LT, and WT) of the 1999 to 2006 Chevrolet Silverado 1500. The '99-'02 models use all the same bulbs as the '03-'06 with the exception of the fog lights. We make the distinction below in our size charts.
We organized all the bulbs into 5 lighting categories with easy-to-read charts. Select any of the categories below to jump right to the bulb size chart you're looking for:
💡 TIP: Did you know that you can upgrade your headlight and fog light bulbs on your Silverado 1500? Get up to 300% more light with LED or HID bulbs. Learn more below the size charts!
️⭐ NOTE: This guide only applies to 1999, 2000, 2001, 2002, 2003, 2004, 2005, and 2006 Chevy Silverado 1500 with the original factory (OEM) assemblies. If you have aftermarket headlights, fog lights, tail lights, etc. you will need different bulb sizes as per the manufacturer's specifications.
🎯 ACCURACY: If you notice any inaccuracies or missing information, please let us know so we can update the guide. Providing accurate and complete information is important to us and our readers.
🚧 IMPORTANT: Automotive light bulbs are vehicle-specific! Follow this guide, review your owner's manual or contact your dealership to make sure you're buying the right bulbs to avoid fitment issues.
|Low Beam Headlights (dims)||9006 (HB4)||Halogen||Yes|
|High Beam Headlight (brights)||9005 (HB3)||Halogen||Yes|
|Brake Light (Rear)||3156 (3157)||Halogen||Yes|
|Brake Light (High-Mounted)||912 (921)||Halogen||Yes|
|Reverse Light||3156 (3157)||Halogen||Yes|
|Tail Light||3156 (3157)||Halogen||Yes|
|Turn Signal Bulb (Front)||3156 (3157)||Halogen||Yes|
|Turn Signal Bulb (Rear)||3156 (3157)||Halogen||Yes|
|Parking Light||3156 (3157)||Halogen||Yes|
|Side Marker (Front)||194 (168)||Halogen||Yes|
|Side Marker (Rear)||194 (168)||Halogen||Yes|
|Ash Tray Light||194 (168)||Halogen||Yes|
|Courtesy Light (Front)||194 (168) or 74||Halogen||Yes|
|Courtesy Light (Rear)||6612||Halogen||Yes|
|Dome Light||221-2 (578)||Halogen||Yes|
|Glove Box Light||194 (168)||Halogen||Yes|
|License Plate Light||194 (168)||Halogen||Yes|
|Map Light||194 (168)||Halogen||Yes|
|Trunk/Cargo Light||912 (921)||Halogen||Yes|
|Year Range||1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006|
|Low Beam Headlights||9006 (HB4)|
|High Beam Headlight||9005 (HB3)|
|Fog Light ('99-'02)||880|
|Fog Light ('03-'06)||9145|
|Brake Light (Rear)||3156 (3157)|
|Brake Light (High-Mounted)||912 (921)|
|Back-Up (Reverse) Light||3156 (3157)|
|Tail Light||3156 (3157)|
|Turn Signal Bulb (Front)||3156 (3157)|
|Turn Signal Bulb (Rear)||3156 (3157)|
|Parking Light||3156 (3157)|
|Side Marker (Front)||194 (168)|
|Side Marker (Rear)||194 (168)|
|Ash Tray Light||194 (168)|
|Courtesy Light (Front)||194 (168) or 74|
|Courtesy Light (Rear)||6612|
|Dome Light||221-2 (578)|
|Glove Box Light||194 (168)|
|License Plate Light||194 (168)|
|Map Light||194 (168)|
|Trunk/Cargo Light||912 (921)|
Looking to improve the lights on your 1996-2006 Chevy Silverado 1500 with better, brighter, and more durable lighting? At XenonPro.com, we developed LED and HID bulbs that fit right into your vehicle. With the same design and plugs, our bulbs are incredibly easy to install and will improve your light output by up to 300%.
Discover our award-winning lighting products backed by our Lifetime Warranty:
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Check out these two great videos on how to change your headlight bulbs in your 1999-2002 and 2003-2006 Chevy Silverado 1500, respectively. Both are very simple and practically identical.
The only difference is that the '99-'02 has 2 pins that run along the back of the headlamp to secure it while the '03-'06 has only one on top of the assembly.
You won't need any tools to access and change your headlamp bulbs. We recommend wearing gloves to prevent getting fingerprints on the bulbs.
Here is another install video, this time of a halogen to LED headlight bulb upgrade. This video is for the 3rd Gen. Silverado 1500s (2014-2015) but it'll give you an idea of what upgraded bulbs look like. Enjoy!
Watch this great video on how to change your headlight assemblies on your 1999 to 2006 Chevy Silverado 1500. You won't need any tools to change the headlamp assemblies.
Need more information about bulb sizes, how to change the bulbs, or simply need the owner's manual? Find it below:
Yes. This guide applies to all years from 1999 through 2006 Chevrolet Silverado 1500 (1st Gen.).
Yes. This guide applies to all sub-models and trims (LS, LT, and WT) from 1999 to 2006.
If you do a lot of nighttime driving or have difficulty seeing at night, we recommend upgrading from halogen to either LED or HID bulbs. They will produce more light and last longer than replacement bulbs.
Discover how you can put LED or HID bulbs in your factory headlights.
Yes. Changing halogen bulbs is quite easy. We strongly advise finding How-To videos online for the specific bulb(s) you wish to change and consult the Owner's Manual for additional help.
No. Aftermarket assemblies typically use different bulb sizes. Consult with the assembly manufacturer for the right bulb size(s).
Disclaimer: The information contained on this page is provided free of charge to our visitors. It was prepared to the best of our abilities and with all the information available to us at the time of writing. We reserve the right to change, remove or update any information contained on this page at any time and without notice to improve its accuracy. The most reliable method to determine the bulb size is by pulling your actual bulb(s) and reading the part number indicated directly on the bulb. The information compiled on this page comes with no guarantees or warranties.