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Plug-and-play compatible with GMC Sierra HD 2020-2023 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. 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.
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.
Options
All sidemarkers illuminate in bright amber color, but there are three colors of lenses.
Amber: Also called OEM, these match your original fender lights, and are DOT/SAE compliant.
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.)
Wade Barker
Reviewed in the United States on February 17, 2025
Perfect OEM replacement. Don’t buy Recon, these fit much better. Not a huge fan of the Diode Dynamics advertising at night but they fit nicely and they had a great install video.
BJL
Reviewed in the United States on September 27, 2024
I really liked the lights when I got them, they have been on vehicle for 3 years now and they are really starting to degrade. It looks as if they are made out of some inferior plastic. Anyway they looked great for about 1 1/2 years, now they look like the picture. The light itself is working fine just the plastic looks really degraded.Bruce
Ryan
Reviewed in the United States on July 19, 2024
Very nice product so far, you don’t have to drop the whole front wheel well liner just do a few screws and you should have enough room, the rear take it easy on the clips I used all of them that they supplied
Robert
Reviewed in the United States on February 13, 2024
Takes some time to install. It is worth it.
Jesse
Reviewed in the United States on March 4, 2023
Installed on a 2021 GMC Dually. They look great and function like they are supposed to. I like that the entire length of the plastic marker is illuminated versus other manufacturers who only light up the center 4 inches or so.I did have one of the little red locking slides break off on the Diode Dynamics side of the wiring harness when installing. Just be careful when sliding it forward, there is a weak spot on the thin part of the red slide. I had to remove the red slide completely, however the harness still clips securely into the back of the GMC light harness, it's just not "locked".Some people wonder why they have one wire harness that runs down each side of the vehicle instead of just connecting the back ones to the rear taillights. I actually like this because it's easier to run the harness along the frame rail than have to remove the rear taillights. Taillights aren't hard, its just easier.This is more a GMC thing. The rear plastic fender covering that you have to pry off used double sided taped / adhesive to secure it to the body as well as the clips. This makes it more difficult to get that part started and peeled back for the rear install. While Diode Dynamics supplies you 10 extra clips, I would buy another 10 pack of these cheap clips as you don't want to take it all back apart for just a clip or two. I used all ten and was lucky enough to salvage other ones that didn't break by being extra careful. You might consider also getting some automotive trim tape to redo the adhesive if you want.
Anthony Baczewski
Reviewed in the United States on February 16, 2023
Don’t like the fact they put the product name inside the light when my lights have Gmc inside there’s, I understand their advertising but come on !
Randy Mann
Reviewed in the United States on July 6, 2022
Excellent quality and fit. But you must rely on YouTube video since pictures are too dark.Curious as to why it requires running one harness from the front instead of using front and back t-taps.But overall very pleased with the look and function.
Bodi
Reviewed in the United States on April 6, 2022
Dealership painted my fender flares before I got the truck and used double sided 3m adhesive tape to put them back on so removing the flares was the worst part of my install ……: not bad if it wasn’t for that…. I only ended up 2 plastic clips shortLights look great , electrical went great
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