WE STAND IN SUPPORT OF OUR TRUCK DRIVERS ~ SHIPPING DELAYS ARE EXPECTED THIS WEEK

Headlight Assemblies

Tail Light Assemblies

Diode Dynamics Fog Light Assemblies

Morimoto XB LED Fog Light Assemblies

Morimoto 4Banger LED Fog Light Assemblies

3RD Break Light Assemblies 

LED ASSEMBLIES

LED Headlight Conversion Kits

LED Interior & Exterior Bulbs

High Power Reverse Bulbs

SWITCHBACK SIGNAL BULBS

LED Rings & Strips

Demon Eye Kits

Rock Light Kits

Fitted Halo Kits 

Profile DRL Boards

Diode Dynamics DRL Boards

RGB Controllers

RGB & Switchback

Relay Harnesses 

Canbus & Anti Flicker Modules

Pigtails, Adapters & Resistors

OEM Headlight & Tail Light Conversion Harnesses

Tail As Turn Modules

Wiring ~ Adapters ~ modules

HID Parts

Projectors & Accessories

Light Bar - Parts , Wiring, Accessories

Universal LED Light Bars

Universal S5 5" LED Pods

Universal SS3 3" LED Pods

Universal SS2 2" LED Pods

Universal SSC1 1" LED Pods

Diode Dynamics LED Light Bars & Pods

LED Mirror & Puddle Lamps

LED Bed Lamps

LED DRL & Turn Signal Lamps

LED Side Markers & Fender Lamps

LED License Plate Lamps

No reviews

Part #: 1 × DD5125

LED Sidemarkers for 2020-2021 GMC Sierra HD 2500/3500 (set)

Lens Colour: Clear
Function: Standard

Features

  • Plug-and-play replacement for 2020+ 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.

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, smoked-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.)


What's Included

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
100% Satisfaction Guarantee

Fitment

Application:Sidemarker
Make:GMC
Model:Sierra HD 2500/3500
Years:2020, 2021
Electrical Compatibility:No electrical issues (tested and confirmed)