DESCRIPTION

Features

Plug-and-play replacement for 2020-2023 GMC Sierra HD fender lights
Dynamic startup sequence with animated effect
Fully-illuminated housing, with dual-lens design for an even glow
Optional Sequential turn signal feature, with plug-and-play wiring harness
OEM-grade construction and perfect fitment
Engineered and assembled in USA

Overview

Upgraded Styling. If you're looking to give your GMC Sierra 2500/3500 an upgrade in styling and appearance, this is the perfect way to do it! These LED sidemarkers are a plug-and-play replacement for the factory fender lights, illuminating the entire width of the housing for a distinctive look and brighter appearance. Choose from three lens color options to get the look you're after.

GMC Sierra Sidemarker Functions

Unique Startup. Both the standard and sequential models feature a unique startup sequence. Every time the sidemarkers turn on, they illuminate in an intense amber color starting from the center then spreading to either side. Once they are completely illuminated, they gradually return to a running light mode.

Sequencing Turn Signal. Our sequential option provides an upgrade in functionality. Anytime you hit your turn signal, the sidemarkers illuminate in a sequencing amber pattern to indicate signaling! The sequential option uses the included plug-and-play harness to power the fender lights using the headlight connector.

OEM Grade. Unlike other sidemarkers on the market, these sidemarkers were designed for OEM standards of quality, using automotive-grade plastic materials, UV-stable lenses, and quality connectors. The dual-lens design uses an inner diffusing lens combined with an outer lens, for an even, uniform glow. The units themselves are designed directly from original CAD data for a perfect fit, and use OEM-grade connectors that plug right into the factory socket.

Reliability. These LEDs are designed with newer constant-current circuitry and transient voltage protection. These features, found in factory-installed lighting components, protect the circuit over time, ensuring years of flicker-free performance. They also include a breather vent, to prevent pressure buildup and maintain a strong weathertight seal for years to come.

Experience. After over a decade in business, Diode Dynamics is the most trusted name in automotive LED lighting. Unlike all other LED distributors, we assemble and engineer products in the United States, for high quality and fast time-to-market of the newest and brightest LED technologies. We pride ourselves in offering only quality LED products, that will exceed your expectations. Please contact us if you'd like to discuss your lighting project!

Options

All sidemarkers illuminate in bright amber color, but there are three colors of lenses. Choose the one that fits your style!

Amber: Also called OEM, these match your original fender lights, and are DOT/SAE compliant in both illumination and lens color.

Smoked: A dark, blacked-out appearance that blends nicely with the factory fender. (May not meet compliance requirements in your region.)

Clear: These are clear in color, but still have the retroreflector optics. (May not meet compliance requirements in your region.)

In the Box:

Standard

Four (4) replacement sidemarkers
Ten (10) fender clips

Sequential

Four (4) replacement sidemarkers
Two (2) wiring harnesses
Ten (10) fender clips
Four (4) rubber plugs

Quantity: Full Set (Four total)

Warranty: 3 year warranty

Return Policy: 30-day Return with no restocking fee

100% Satisfaction Guarantee

Fitment

NOTE: The sequential option is not compatible with the 2023 Denali Ultimate and AT4 HD trim levels.

Application: Sidemarker

Make: GMC

Model: Sierra 2500 HD

Years: 2020, 2021, 2022, 2023

Electrical Compatibility: No electrical issues (tested and confirmed)

SPECIFICATIONS

Measured Lumens: 30 lm

Power (watts): 1.3

Operating Voltage: 9-16V

Current (amps @ 12.8V): 0.95

Operating Temperature: -40C to 85C (-40F to 185F)

LED Emitter: Mini SMD

Connector(s): OEM-Size Plug and Play

Driver Features: Internal, Constant Current

Materials: ABS Base, PMMA Lens

Compliance Ratings: SAE J575 Durability Test

Application: Sidemarker

Make: GMC

Model: Sierra 2500 HD

Years: 2020, 2021, 2022, 2023

Electrical Compatibility: No electrical issues (tested and confirmed)

100% Satisfaction Guarantee

INSTALLATION

During installation, you must remove the factory fender liner, which is held in place using plastic clips. We found that some of these might break when removed, so we've included ten (10) extra clips, just in case! If you need more than 10 replacement clips, they are available to purchase here.

Installation Time: 20-30 minutes

Tools Needed: Basic Toolset

Modification: None

Installation Guide: Click to download

WARRANTY

3 Year Replacement Limited Warranty

All Diode Dynamics products come with a 3 Year Worry-Free Warranty.

If you experience any defect with a product, we will do some quick troubleshooting, and if necessary, provide a replacement. There is no need to wait for a return and repair process. Click here to learn more.

All Except Tail Lights

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LED Sidemarkers For 2020-2023 GMC Sierra HD 2500/3500 (Set)

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