1999–2006 Chevy Silverado 1500 Bulb Size Chart & LED Upgrade Guide

When it comes to replacing or upgrading the lights on your 1999–2006 Chevy Silverado 1500, knowing the exact bulb size for each component is crucial. Whether you're dealing with a dim headlight, planning an LED upgrade, or simply want a reliable reference for all your light bulbs, this guide covers it all.

The 1999–2006 Silverado belongs to the same generation of trucks (the GMT800 platform), but not all bulb sizes are identical across these years. That's why we've compiled a clear, year-specific light bulb size chart, plus expert tips on upgrading to LED, installation advice, and answers to common questions Silverado owners ask.

From headlights to fog lights, brake lights to dome bulbs—this is your one-stop bulb reference for the 1999–2006 Silverado 1500.

1999–2006 Chevy Silverado 1500 Bulb Size Chart

Replacing or upgrading your 1999–2006 Chevy Silverado 1500 lights starts with understanding which bulbs your truck uses. This complete light bulb size chart includes all major lighting components—headlights, fog lights, tail lights, and interior bulbs—organized by year and bulb type.

The Silverado 1500 from this generation (1999–2006) shares a common platform, but some lighting components—especially fog lights—vary slightly between earlier (1999–2002) and later (2003–2006) models.

Here’s the full breakdown by bulb type and year range:

Chevy Silverado 1500 Headlight and Exterior Bulb Sizes

*This bulb size chart applies specifically to the 99–06 Chevy Silverado 1500, including trims like LS, LT, and WT. For HD (Heavy Duty) versions, always confirm fitment as some tail or fog light types may differ slightly.

Use this reference anytime you’re replacing a blown bulb, planning a full LED upgrade, or shopping for Silverado lighting accessories. If you drive a 2006 Chevy Silverado and want to know your headlight type—it's likely a 9006 for low beam and 9005 for high beam, just like earlier models.

If you own an early model, be sure to check out this complete 1999–2002 Chevy Silverado 1500 Bulb Size Guide to ensure exact fitment and upgrade compatibility.

LED Upgrade Tips for 1999–2006 Chevy Silverado 1500

Upgrading the lighting on your 1999–2006 Chevy Silverado 1500 is one of the simplest ways to improve both safety and style. Swapping out outdated halogen bulbs or factory assemblies with modern LED lighting delivers sharper visibility, faster response times, and a clean, modern appearance—especially at night.

At Hawkglow, we provide LED lighting solutions designed specifically for this generation of Silverado—including LED headlight bulbs, fog light bulbs, and full light assemblies.

LED Headlight Bulbs (9005 & 9006)

Most 1999–2006 Silverado models use 9006 for low beams and 9005 for high beams. Hawkglow LED headlight bulbs are built for easy plug-and-play installation, offering massive visibility improvements over stock halogen bulbs.

Explore our high-performance LED headlight collections:

🔹 9005 LED Headlight Bulbs Collection

🔹 9006 LED Headlight Bulbs Collection

Why choose Hawkglow LED bulbs?

• Up to 6× brighter than factory halogens
• 6500K color temperature for crisp white light
• CANBUS-ready and anti-flicker designs
• 50,000+ hour rated lifespan
• Simple, no-mod install process

No matter the trim—WT, LS, or LT—our 9005 and 9006 LED bulbs fit perfectly and perform brilliantly.

LED Fog Light Bulbs (880 / 9145)

Silverado fog light sizes vary by year:

• 1999–2002 typically use 880
• 2003–2006 models usually use 9145

Hawkglow LED fog light bulbs provide better clarity and visibility in adverse weather, with beam patterns optimized for road-level focus.

LED Tail Light Assemblies

If your factory headlights are oxidized, cracked, or outdated in style, a full replacement makes a dramatic difference. Our headlight assemblies are specifically engineered to fit 1999–2006 Silverado 1500 models, combining modern aesthetics with factory-spec fitment.

Features include:

• Clear lenses with OEM-style housings
• Sealed, weather-resistant construction
• DOT-compliant and road-legal
• Plug and play for easy installation

Tail Light Assemblies

For the rear, Hawkglow LED tail light assemblies are compatible with 1999–2013 Silverado models, giving you more than just a cosmetic upgrade.

Advantages:

• High-output LEDs for brake, turn, and reverse lights
• Faster light response for improved safety
• Sleek styling and easy plug-and-play installation
  

With the right LED upgrades, your 1999–2006 Chevy Silverado 1500 benefits from enhanced visibility, faster lighting response, and a more modern appearance. These improvements contribute to safer night driving, better awareness in poor weather, and a refreshed OEM-style finish.

In the next section, we’ll cover installation guidance and key compatibility considerations to help you complete your upgrade with confidence.

Installation & Compatibility Tips for LED Upgrades

Upgrading your 1999–2006 Chevy Silverado 1500 with LED lighting is typically a straightforward process, especially when using plug-and-play products like those offered by Hawkglow. That said, understanding a few key installation steps and compatibility checks can help you avoid common issues and ensure optimal performance.

#1. Headlight Bulb Replacement

To replace the headlight bulbs on your Silverado:

1. Open the hood and locate the rear of the headlight housing.
2. Remove the retaining clips or screws to access the bulb socket.
3. Turn the socket counterclockwise and pull it out gently.
4. Disconnect the halogen bulb, then plug in your new Hawkglow LED bulb.
5. Test the beam pattern and polarity before reassembling the housing.

Tip: On some models, especially 2003–2006, you may need to partially remove the grille or headlight bezel for full access.

This method works for both 9006 low beams and 9005 high beams. Installation typically takes under 15 minutes per side.

#2. Fog Light Bulb Installation （880 / 9145）

Fog light access varies slightly depending on model year:

• For 1999–2002: Access is often through the front bumper or wheel well. The 880 bulb is usually mounted in a bracket behind the fog light lens.
• For 2003–2006: The 9145 fog bulb can often be accessed from underneath the vehicle. A creeper or jack may help if ground clearance is tight.

Fog light bulb replacements follow the same plug-and-play process: unplug, swap in the LED, test polarity, and resecure.

#3. Headlight Assembly Installation (1999–2006)

Tools Needed: 10mm socket, flathead screwdriver

Steps:

1. Open the hood and remove two 10mm bolts on the headlight.
2. Pull the headlight assembly forward.
3. Disconnect the wiring harnesses (low beam, high beam, turn signal).
4. Connect your Hawkglow headlight assembly and reinstall.
5. Test all lighting functions and confirm alignment.

Tip: Adjust beam angle if needed after installation.

#4. Tail Light Assembly Installation (1999–2013)

Tools Needed: T15 Torx driver or 10mm socket

Steps:

1. Lower the tailgate to access the two inner bolts.
2. Remove bolts and gently pull the tail light straight out.
3. Unplug the bulb sockets or full harness.
4. Connect the Hawkglow LED tail light assembly.
5. Reinstall and test brake, reverse, and signal lights.

Tip: Apply dielectric grease to protect connections from corrosion.

Compatibility Checks

Before purchasing or installing LED upgrades:

• Confirm your Silverado’s model year and trim level (WT, LS, LT).
• Verify bulb types using the owner's manual or OEM labels.
• Inspect the condition of wiring and sockets before reuse.
• Check polarity—LEDs are direction-sensitive.
• Test the lighting before fully reassembling the housings.
• For HD models, confirm socket styles—some fog or tail lights differ from 1500 trims.

All Hawkglow headlights and taillights for Chevy Silverado 1500 are designed to meet OEM fitment standards, with no cutting or splicing required.

Conclusion

Upgrading the lighting on your 1999–2006 Chevy Silverado 1500 is more than just a cosmetic improvement—it’s a smart, safety-focused enhancement that improves visibility, modernizes your truck, and enhances your driving experience. With this comprehensive guide and Hawkglow’s purpose-built LED products, you have everything you need to choose the right parts, complete the installation, and drive with confidence. Whether you're replacing a single bulb or doing a full lighting overhaul, this resource is built to support you every step of the way.

FAQs

1. What generation is the 2002 Chevy Silverado?

The 2002 Silverado is part of the first generation (GMT800), produced from 1999 to 2006.

2. What headlights does a 2006 Chevy Silverado have?

The 2006 Silverado uses 9006 bulbs for the low beams and 9005 for the high beams. Both are halogen by default but can be upgraded to LED.

3. Are the headlight bulbs the same for all 1999–2006 Silverado 1500 models?

Yes, most Silverado 1500 models from 1999 to 2006 use 9006 for low beams and 9005 for high beams, regardless of trim. However, always double-check your specific model year and housing before purchase.

4. Can I upgrade my 1999 Silverado to LED headlights and tail lights?

Absolutely. The 1999–2006 Silverado platform is fully compatible with LED upgrades. Hawkglow offers plug-and-play LED headlight bulbs and tail light assemblies designed for this generation.

5. Are Hawkglow LED bulbs truly plug-and-play?

Yes. All Hawkglow LED bulbs for Silverado models are engineered for direct replacement—no splicing, resistors, or decoding modules required in most cases. Just plug in, test polarity, and go.

6. Do I need to upgrade the wiring for LED headlights or fog lights?

No wiring modifications are required when using Hawkglow LED bulbs. All products are designed to match OEM specifications and draw less power than halogen bulbs, making them safe for stock electrical systems.

7. What fog light bulb does my Silverado use?

• 1999–2002 Silverado 1500: 880 fog light bulb
  

• 2003–2006 Silverado 1500: 9145 fog light bulb
   You can upgrade both with Hawkglow LED fog light bulbs designed for direct fitment.
  

8. Are tail light assemblies compatible with extended cab or HD models?

Hawkglow LED tail light assemblies are compatible with 1999–2013 Silverado 1500, including extended cab variants. For HD models, verify your socket style before ordering.

9. Will switching to LED cause dashboard warning lights or hyper-flashing?

No. Hawkglow LEDs are CANBUS-ready and designed to eliminate flickering or error codes in most Silverado models. If you experience hyper-flashing, it may be caused by worn factory relays or aging sockets—not the LEDs themselves.

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Related Reading

• 2007–2013 Chevy Silverado 1500 Bulb Size Guide
• 2014–2015 Chevy Silverado 1500 Bulb Size Guide
• 2016–2018 Chevy Silverado 1500 Bulb Sizes & LED Upgrade Guide