The 1999 Chevy Silverado remains a popular choice among truck enthusiasts, but its aging headlight assemblies often suffer from fogging, cracking, or dimming. Upgrading or replacing the headlight assembly improves visibility, safety, and the truck’s overall appearance. This guide covers everything you need to know—OEM vs. aftermarket options, installation tips, and performance upgrades—to make an informed decision.
Why Replace Your 1999 Silverado Headlight Assembly?
Over time, factory headlight lenses yellow, haze, or develop cracks due to UV exposure and road debris. Dim or misaligned lights reduce nighttime visibility, increasing accident risks. Common signs you need a replacement include:
Foggy or yellowed lenses (reduces light output by up to 50%)
Cracks or moisture inside the housing (leads to electrical issues)
Flickering or dim bulbs (often due to wiring or reflector deterioration)
A fresh 1999 Chevy Silverado headlight assembly restores optimal lighting performance and enhances the truck’s look.
OEM vs. Aftermarket Headlight Assemblies
1. OEM (Original Equipment Manufacturer)
Pros:
Exact fit, no modification needed
Maintains factory beam pattern for proper road illumination
High-quality materials for long-term durability
Cons:
Expensive (often $150+ per side)
Limited design options (only stock-style replacements)
2. Aftermarket Options
Halogen Replacements
Affordable (50–50–100 per pair)
Some include clear lenses for a cleaner look
LED/Projector Upgrades
Brighter, whiter light output (better for night driving)
Modern styling (black housings, halo rings, etc.)
Some are DOT/SAE compliant for legal road use
Potential Issues:
Poorly made housings may leak or fade quickly
Some LED kits require wiring modifications
Installation: Step-by-Step Guide
Replacing the headlight assembly on a 1999 Silverado is straightforward.
Tools Needed:
Phillips screwdriver
10mm socket wrench
Trim removal tool (optional)
Steps:
Disconnect the Battery – Prevent electrical shorts.
Remove the Grille – Unclip the plastic retainers (some models require removing screws).
Unbolt the Headlight Assembly – Three bolts hold it in place (two on top, one near the fender).
Unplug the Wiring Harness – Squeeze the clip and pull gently.
Install the New Assembly – Secure with bolts, reconnect the harness, and test before reassembling.
Tip: Adjust the beam alignment using the screws on the housing to avoid blinding other drivers.
Upgrading to LED or HID Headlights
If you want better visibility, consider upgrading to LED or HID bulbs.
LED Headlights
Energy-efficient, long-lasting (30,000+ hours)
Plug-and-play options available (no ballast needed)
Crisp white light (5000K–6000K color temperature)
HID Conversion Kits
Extremely bright (3x halogen output)
Require ballasts and proper reflectors to avoid glare
Best for off-road use (some states restrict HID in halogen housings)
Warning: Cheap LED/HID kits in stock housings can scatter light poorly. For best results, use projector-style housings.
Maintenance Tips to Extend Headlight Life
Clean lenses regularly – Use a UV-resistant plastic polish to prevent hazing.
Check for moisture – If condensation appears, replace seals or the entire assembly.
Upgrade wiring harnesses – Older trucks benefit from relay harnesses to prevent voltage drop.
Best Replacement Options for 1999 Silverado
TYC 1A0172 (OEM-Style Replacement) – Affordable, DOT-approved, no-frills option.
Spyder Auto Black Projector Headlights – Aggressive look with LED compatibility.
Dorman 601-171 – Direct-fit, durable construction, budget-friendly.
Chevy Silverado
Replacing your 1999 Silverado’s headlight assembly improves safety, visibility, and aesthetics. While OEM parts ensure reliability, aftermarket options offer style and performance upgrades. For the best results, pair a quality housing with LED bulbs and proper beam alignment.
