Nilight Third Brake Light for Chevy & GMC Silverado/Sierra 1500–3500HD (2014–2018) — LED, Plug-and-Play Replacement

Nilight's LED third brake light is a direct-fit, plug-and-play replacement for Chevrolet and GMC 1500/2500/3500HD trucks (2014–2018) that upgrades the cargo and brake lamp to a brighter, longer-lasting LED assembly.

If your factory braking or cargo light has dimmed, failed, or you simply want a more visible rear signal, this Nilight unit swaps in without cutting or rewiring on compatible trucks. Manufactured to meet OEM-style specifications, the assembly uses a full LED source with separate circuits for brake and cargo functions, improving illumination speed and output while matching the original mounting points.

Will this fit my Silverado or Sierra model?

This third brake light is designed specifically for Chevy Silverado and GMC Sierra 1500, 2500HD, and 3500HD trucks from model years 2014 through 2018 that originally came with cargo lights in the high-mount location. It replaces the entire lamp housing and uses the factory screw locations and connector for a direct swap.

• Compatible models: Silverado & Sierra 1500, 2500HD, 3500HD (2014–2018).
• Fits vehicles equipped with factory cargo lights only.
• Uses factory mounting screws and existing wiring—no drilling required.

How bright and durable is the Nilight LED third brake light?

The assembly contains 27 integrated LEDs—9 dedicated to brake illumination and 18 for the cargo light—providing a pronounced increase in brightness and faster light-up compared with halogen originals. Components are selected to meet OEM-quality standards for reliable, long-term use.

• 27 high-efficiency LEDs for stronger, quicker illumination.
• OE-grade materials from manufacturers approved to original-equipment tolerances.
• Longer lifespan than halogen bulbs and improved energy efficiency.

Is this light weatherproof and safe for outdoor use?

Yes—Nilight technicians sealed the housing with a high-density foam pad and careful assembly to protect the electronics from water intrusion. The unit is rated to withstand rain, snow, and splashing, but a recommended sealant step improves long-term water resistance at the vehicle interface.

• High-density foam backer for a sealed mount against the roof or cab surface.
• IP67-level protection against dust and temporary water exposure.
• Recommended: apply butyl or equivalent sealant after installation for optimal waterproofing.

How do I install this Nilight replacement—do I need special tools?

Installation is plug-and-play and built to match the truck's original connector and screw pattern. No drilling or cutting is needed; using the factory screws and hand tools avoids overtightening and helps prevent cracking the new housing.

• Plug-and-play connector fits factory wiring harness—no splicing required.
• Use factory screws included or original screws for proper fit.
• Hand screwdriver recommended; avoid power tools that can overtighten and damage the case.

Who is this for? This Nilight LED third brake light is ideal for owners of 2014–2018 Chevrolet Silverado and GMC Sierra trucks who want a reliable, brighter replacement for a failed or dim high-mount cargo/brake lamp. It suits drivers seeking an OEM-style upgrade with easier installation, improved visibility, and weather-resistant construction—especially fleets, daily drivers, and anyone doing their own truck maintenance who values direct-fit, no-modification replacements.