Tresound LED Third Brake Light for 1999–2007 Chevy Silverado & GMC Sierra — Smoked Lens, Waterproof Gasket

Tresound's LED third brake light is a direct-fit, high-mount stop lamp designed to replace the factory center cargo lamp on 1999–2007 Chevy Silverado and 1999–2007 GMC Sierra trucks, offering brighter LED illumination, a smoked lens look, and a waterproof mounting gasket.

This upgraded rear cargo lamp swaps into the original third-brake-light opening for many Silverado and Sierra models, delivering the instantaneous brightness and long life of LEDs while keeping an OEM-style fit. The housing is molded from durable ABS, and the unit includes a foam-backed gasket to resist moisture intrusion in wet or snowy conditions. It’s a practical way to refresh faded or nonworking high-mount stop lights while adding a subtle smoked appearance.

Will this light fit my exact truck model and year?

This Tresound LED third brake light is engineered to fit a broad range of GM half-ton and heavy-duty Classic models. Confirm compatibility by matching your truck’s model year and whether it’s the Classic/HD variant; the unit follows factory mounting points and wiring harness locations.

• Fits Chevy Silverado 1500/2500 (1999–2006) and Silverado 1500HD/2500HD/3500 (2001–2006)
• Fits GMC Sierra 1500/2500 (1999–2006) and Sierra 1500HD/2500HD/3500 (2001–2006)
• Compatible with 2007 Silverado/Sierra HD Classic models
• Direct-replacement design for the factory third brake light opening and plug

How does the light improve visibility and safety on the road?

LEDs light up faster and more uniformly than incandescent bulbs, making the high-mount stop lamp more noticeable to drivers behind you. The clear, crisp LED output increases rear signaling clarity in daytime and nighttime driving without changing your truck’s electrical system.

• Instant-on LED response helps following drivers react sooner
• Even light distribution reduces hot spots and dark corners
• High-efficiency diodes draw less current than incandescent bulbs
• Smoked lens maintains a sleek look while meeting visible output needs

What are the build quality and weatherproofing features?

The assembly uses ABS plastic for a lightweight yet impact-resistant housing and a high-density foam gasket to seal the rear cargo lamp against moisture. Those design choices help prevent leaks and corrosion inside the light cavity so the unit maintains brightness and function in wet climates.

• ABS housing resists cracking and UV fading
• Foam-mounted back gasket reduces water and snow ingress
• Sealed lens assembly protects LEDs from dust and road debris
• Smoked finish is applied to the lens for style without sacrificing visibility

How easy is installation and what comes in the box?

Installation is straightforward for anyone familiar with changing automotive exterior lamps: remove the factory third brake lamp, disconnect the harness, and swap in the Tresound unit using the original mounting points. The package includes the replacement lamp and a gasket so you can complete the swap without sourcing additional seals.

• Direct-fit replacement—uses existing mounting and wiring locations
• Gasket included to ensure a weatherproof seal
• No modifications to the body or wiring typically required
• Suitable for DIY installation with basic hand tools

Who is this for? This LED third brake light is aimed at Silverado and Sierra owners who need a direct replacement for a burnt-out or fogged factory high-mount stop lamp, or drivers who want a longer-lasting, brighter LED upgrade with a subtle smoked styling cue. It suits DIY enthusiasts, truck restorers, and anyone looking to maintain or improve rear signaling on 1999–2007 Chevy and GMC Classic models without cutting or splicing the factory wiring.