Lasfit LED Lighting Upgrade Kit for 2020-2023 GMC Sierra 2500/3500 HD: A Practical Review

Introduction

The Lasfit LED lighting upgrade kit for the 2020-2023 GMC Sierra 2500 and 3500 HD replaces the factory incandescent bulbs in several key locations: front turn signals, reverse lights, cargo light, third brake light, and license plate lights. The goal is straightforward: brighter output, quicker on-off response, and a cleaner look than the yellow halogen glow the truck rolls out of the factory with.

This review covers what the kit includes, how the installation actually goes, and what to check before you buy.

Who This Product Is For

This kit is aimed at owners of the 2020-2023 GMC Sierra 2500 HD and 3500 HD who want to modernize the truck’s lighting without replacing entire assemblies. If you’re comfortable with basic hand tools, a creeper, and getting under and around the truck, this is very much a do-it-yourself project.

What’s in the Kit

The kit contains bulbs for several locations, and cross-referencing which bulb goes where is the main challenge. The backup light and the cargo light use the same bulb type, the T15s. The third brake light also uses a T15. The front turn signals use the brighter 7443-style bulbs.

One notable drawback: the boxes are not labeled, and there are no printed instructions in the package. You will want to have a reference ready on your phone before you start, or the sorting process can get confusing. That’s the one clear complaint about the kit’s presentation.

Installation Notes: Reverse Lights and Tail Light Assembly

The reverse lights are accessible without jacking up the truck. Lying on a creeper on the driver’s side, the trick is to avoid reaching over the large crossbar. Instead, go up through the edge of the bumper, where there’s a comfortable opening for your hand. The bulb socket is a simple twist: turn it inward toward the truck, it pops out, swap the bulb, then twist back in the opposite direction to lock it.

The tail light assembly removal takes a couple of very small T15 screws. A security bit set makes this job much easier and is cheap to add to your toolbox. Once the screws are out, gently pry the assembly apart and it slides out toward you. The bottom bulb is the one you want, and it pops open similar to the license plate lights.

When reinstalling, make sure the wire loom sits inside the two pegs. It’s a little fiddly, but it goes back in without serious effort. A useful tip: once you’ve removed a tail light once, doing it again for a future brake light replacement is significantly easier.

Front Turn Signals

The front turn signals are actually the easiest part of the whole job. Locate the access opening, twist the socket off, pull the bulb straight out, and seat the new LED in its place. The same procedure applies on the passenger side, and the little tab makes the access point easy to find once you know what you’re looking at.

The Results

The front blinkers are the standout result. They are significantly brighter than stock, bright enough that you can’t look directly into them, and they switch on and off noticeably faster than the old halogens.

Around the back, the license plate lights make a big visual difference. The previous yellow halogen look was poor, and the clean white LED output is a genuine improvement in appearance. It’s worth noting that the brake lights are not covered by this kit and remain stock, which would be a nice addition if Lasfit ever includes them.

Things to Consider Before Buying

• No labeling on the boxes and no included instructions, so plan to have a cross-reference handy.
• The tail light screws are tiny T15 security screws; a bit set is effectively a required companion purchase.
• Brake lights are not part of the kit.
• Wire loom placement during reinstallation takes a bit of patience.

Buying Advice

If you own a 2020-2023 GMC Sierra 2500 HD or 3500 HD and want a brighter, faster-responding, better-looking lighting setup, this kit delivers on those goals, particularly for the turn signals and license plate lights. Budget a bit of time for sorting the bulbs and don’t start without a reference guide open. The installation itself is well within reach for a home mechanic with basic tools.

Conclusion

The Lasfit LED lighting upgrade kit is a worthwhile transformation for the 2020-2023 GMC Sierra 2500/3500 HD. The lack of labels and instructions is a real annoyance, but the finished result, with dramatically brighter turn signals, quick-switching LEDs, and a clean modern look at the license plates, justifies the effort. For owners willing to do the work themselves, it’s an easy recommendation.