Nilight LED Third Brake Light for Chevrolet Silverado GMC Sierra 2014-2018 – Cargo Light Style, 27-LED High-Output Replacement

The Nilight LED Third Brake Light is a direct-fit, high-output replacement for 2014–2018 Chevrolet Silverado and GMC Sierra trucks equipped with cargo lights, combining 27 bright LEDs for faster, more visible braking and dependable cargo illumination.

If your truck has the factory cargo light style third brake light and you want an upgrade that’s plug-and-play, weatherproof, and significantly brighter than the original halogen element, this Nilight assembly provides a like-for-like fit made with OE-grade materials. It replaces the stock lens and bulb with a sealed LED module that enhances rear visibility while preserving factory mounting and wiring for an uncomplicated swap.

Will this third brake light fit my Chevy or GMC truck?

Yes — it’s designed specifically for Silverado and Sierra models from 2014 through 2018 that come with the cargo light-style center lamp. The housing matches factory dimensions so you can reuse the original mounting points and screws.

• Compatible models: Chevy Silverado & GMC Sierra 1500, 2500HD, 3500HD (2014–2018)
• Fits only trucks equipped with factory cargo lights
• Direct-fit brackets and wiring for OEM-like installation

How bright and durable is the Nilight LED assembly?

The unit uses 27 integrated LEDs — 9 dedicated to brake signaling and 18 for cargo illumination — delivering a much brighter, quicker-reacting light source than conventional halogen bulbs. Built from OE-standard materials, it’s engineered for long service life and consistent output in daily driving conditions.

• 27 total LEDs: 9 for brake, 18 for cargo light
• Faster illumination than halogen for improved reaction time
• OE-quality construction for extended durability

Is the light weatherproof and how should I seal it?

The assembly features a high-density foam backing and full sealing that meets IP67-level protection to resist water and dust intrusion in wet weather. For the best long-term waterproofing, apply butyl sealant around the fixture after installation to create a continuous moisture barrier.

• IP67-rated design for rain, snow and road spray protection
• Includes high-density foam pad for secure sealing
• Recommended: apply butyl sealant post-install to increase waterproof reliability

How easy is installation and what hardware is included?

Installation is plug-and-play with no drilling required — you can use the truck’s original screws and mounting points for a clean fit. The package ships with the LED third brake light and a foam pad; use a hand screwdriver to avoid overtightening the housing when reassembling.

• Plug-and-play electrical connector, no splicing needed
• Reuses factory screws and mounting points (use factory screws recommended)
• Included in box: 1 LED third brake light and 1 high-density foam pad

Who is this for: Truck owners who drive 2014–2018 Chevy Silverado or GMC Sierra models with the cargo-style center light and want a direct replacement that improves brightness, responsiveness and weather resistance without modifying factory hardware. It’s ideal for drivers seeking an OEM-quality upgrade that’s straightforward to install and built to withstand harsh road conditions.