LESAUCE third brake light for 1999–2006 Silverado/Sierra — LED upgrade, chrome housing red lens

LESAUCE's 2025 upgraded third brake light is a direct-fit LED high-mount stop light with chrome housing and red lens made for 1999–2006 Chevrolet Silverado and GMC Sierra trucks.

If you own a late-90s or early-2000s Silverado or Sierra and want a brighter, longer-lasting center brake light with a modern look, this replacement brings full-LED illumination, a chrome finish, and a built-in cargo light function. The assembly replaces the factory unit on specified Silverado/Sierra models and includes a foam gasket and rubber washers for a secure, weather-resistant fit. It’s designed to use your truck’s original mounting points and wiring so installation stays straightforward.

Which truck models does this LESAUCE light fit?

This third brake light is manufactured to match the mounting pattern and wiring of specific Chevy and GMC pickups. It covers multiple model years across standard and heavy-duty trims, ensuring compatibility for common Silverado and Sierra variants from the era.

• 1999–2006 Chevrolet Silverado 1500/2500/3500
• 2001–2006 Chevrolet Silverado 1500HD/2500HD/3500HD and 2007 Silverado HD Classic
• 1999–2006 GMC Sierra 1500/2500/3500
• 2001–2006 GMC Sierra 1500HD/2500HD/3500HD and 2007 Sierra HD Classic

How bright and durable is the LED assembly?

The unit replaces incandescent elements with full LED arrays that deliver stronger, more consistent light and a longer service life. LEDs run cooler and are less prone to filament failure, giving you improved visibility and reduced maintenance compared with older bulbs.

• High-intensity red LEDs for brake signaling
• Durable chrome housing for corrosion resistance
• White LEDs for cargo-area illumination (activated with dome lights)

What should I know about installation and sealing?

Installation is intended to be simple if you keep your truck’s original screws and prepare the mounting surface. The package supplies a foam gasket and rubber washers to help prevent water ingress; for extra protection, a small bead of silicone or RTV trim sealant across the seam is recommended.

• Clean mounting lip and contact surface with alcohol before fitting
• Use included rubber washers for a snug, vibration-resistant mount
• Retain your factory screws — new screws are not supplied
• Optional silicone or clear RTV recommended for added waterproofing

How do the cargo light and brake functions operate?

The red LED section illuminates with the brake signal while the white LEDs act as cargo lights tied to the truck’s dome/interior light circuit. Note that the outer white lamps are not wired as reverse lights and will not illuminate automatically when doors unlock.

• Brake lights: active with brake pedal input
• Cargo lights: active when interior dome lights are on
• Outer white LEDs are not reverse lamps

Who is this product for? This LESAUCE upgraded third brake light is aimed at owners of compatible Chevrolet Silverado and GMC Sierra trucks from 1999–2007 who want a reliable, brighter, and more modern-looking high-mount stop lamp. It’s a practical choice for drivers replacing a burned-out or worn factory unit, those upgrading to LED technology for improved visibility, or anyone restoring a pickup and preferring plug-in compatibility with a straightforward install and weather-conscious sealing features.