Lochnchn LED Tail Light for 2019–2025 GMC Sierra Right Rear — Full-LED Direct-Fit, Weatherproof

Lochnchn LED Tail Light is a direct-fit, full-LED right rear replacement designed for 2019–2025 GMC Sierra 1500, 2500HD and 3500HD trucks with factory full-LED taillight systems.

Upgrade your Sierra's rear lighting with a high-brightness, weatherproof LED assembly that mirrors the factory fit for compatible models. This Lochnchn unit replaces the right-side taillight on Sierra trucks equipped from the factory with full-LED tail lamps, delivering improved visibility across brake, reverse and running modes. The housing uses durable plastic, sealed against moisture and dust to extend service life while keeping installation straightforward for technicians or experienced DIYers.

How does this tail light fit my 2019–2025 GMC Sierra?

The Lochnchn tail light is made to match the OEM mounting points and electrical interfaces of the full-LED factory Sierra tail light assemblies. It is only compatible with Sierra models that originally shipped with full-LED tail lights—not halogen versions.

• Fits right/rear side of 2019–2025 Sierra 1500 SLT, AT4, Denali, Denali Ultimate.
• Also fits 2019–2025 Sierra 2500HD and 3500HD full-LED models.
• Not compatible with factory halogen tail light configurations.
• Designed for bolt-in replacement using existing mounts and connectors.

What lighting functions does it provide?

This assembly supports the primary rear lighting modes expected on modern trucks: brake, reverse and driving (tail) illumination. Each mode is driven by the LED array to provide crisp, quick response and better visibility at a glance.

• Brake light: high-brightness LED output for clear signaling.
• Reverse light: bright white LEDs for improved rearward visibility.
• Driving/tail light: consistent, low-intensity LEDs for night-time presence.

Is the Lochnchn LED tail light durable and weatherproof?

The housing and lens are manufactured from resilient plastic with sealed joints, giving the unit resistance to water and dust intrusion. That construction helps prolong performance in road and weather conditions typical for pickup truck use.

• Sealed lens and gasketed edges for moisture resistance.
• Plastic shell resists corrosion compared with metal housings.
• High-brightness LEDs rated for long operational life.

How difficult is installation and what should I prepare?

Installation is intentionally simple when performed on compatible Sierra trucks: the tail light mounts to the original factory points and uses the same electrical connector. Professional installation is recommended if you’re not comfortable removing body panels or working with vehicle wiring.

• Remove factory right tail assembly and unplug OEM connector.
• Fit Lochnchn unit into existing mounting points and secure bolts.
• Reconnect wiring harness and test brake, reverse, and tail functions.
• Have a technician install if unsure about wiring or sealing procedures.

Who is this for? If you own a 2019–2025 GMC Sierra 1500, 2500HD or 3500HD that originally came with full-LED tail lights and you need a direct-fit right-side replacement, the Lochnchn LED Tail Light offers a long-lasting, high-visibility solution. It’s aimed at owner-operators seeking OEM-style fit and finish, fleet managers replacing worn lamps, and professional installers who value a sealed, bright LED module. Verify your truck’s factory tail light type before ordering to ensure compatibility.