GMC Sierra Third Brake Light Bulbs

If you want to replace the third brake light on your GMC Sierra, there are several options to choose from. Aftermarket retailers like Advance Auto Parts carry a range of choices, including LED bulbs, flashers, and fuses.

What Is the Third Brake Light?

The third brake light sits on the upper part of the rear of the vehicle and lights up whenever the brakes are applied. It helps drivers behind the truck notice sooner that the vehicle is slowing down or stopping, which is a small but meaningful safety feature.

AUXITO

The AUXITO LED third brake light offers an easy way to replace the stock bulb in a GMC Sierra 1500. Compared to the original incandescent bulb, the LED version is noticeably brighter, which can improve visibility and give drivers behind you more warning that you're braking. It also gives the truck a more modern LED look.

LED bulbs are generally easier to install than halogen bulbs since they don't require extra wiring or a decoder. Before replacing the third brake light bulb, check the owner's manual to confirm the correct bulb size for your Sierra.

Diode Dynamics

Diode Dynamics offers a limited warranty on all of its products, which covers manufacturing and material defects. The company is happy to help troubleshoot problems with a product, and is willing to exchange it for a new one if it fails to work.

Diode Dynamics LED lighting has been rigorously tested and certified for durability. The bulbs are built with constant-current inductive circuitry and transient suppression to help ensure long-lasting performance. They also go through a rigorous testing process, including a voltage spike device that replicates the start and stop of the alternator, which can destroy many LED bulbs over time.

AUXITO LED Conversion Kits

AUXITO also makes LED conversion kits designed specifically for the GMC Sierra, including bulbs sized for 2014-2018 model years. These kits are built for a precise fit that helps keep rainwater out of the light assembly, and installation is plug-and-play, typically taking about 10 minutes. The kits include a bulb-finder system to help confirm the right size for your Sierra.

LED bulbs are generally a cost-effective alternative to halogen bulbs. They use less energy and tend to last longer, so upgrading the third brake light bulb is a relatively simple way to improve visibility and give the rear lighting a more modern look.

Upgrade Your GMC Sierra With a Big Brake Kit