912/921/T15 High-Output LED Bulbs | 2019–2026 Chevy Silverado & GMC Sierra

Plug-and-Play LED Bulbs for Third Brake, Cargo & Reverse Lights

Starting At
$ 28.79

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Bulb quantity varies based on your selection:

Third Brake Light (Brake): Includes 1 bulb
Third Brake Light (Cargo): Includes 2 bulbs
Reverse Lights: Includes 2 bulbs
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Upgrade the lighting on your 2019-2026 Chevrolet Silverado or GMC Sierra with Boost Auto's 912/921/T15 LED bulbs. Designed as a direct plug-and-play replacement for the factory T15 wedge socket, these bulbs deliver cleaner, brighter light for your reverse lights, third brake light, and cargo light with zero installation hassle.

  • Over 2x brighter than factory halogen bulbs with crisp, bright white light output
  • Fully plug-and-play replacement, no cutting, no splicing, no resistors required
  • Flicker-free design, engineered to work seamlessly with your truck's electrical system without triggering warning lights
  • Direct replacement for reverse lights, third brake light (CHMSL), and cargo lights on 2019-2026 Chevy Silverado & GMC Sierra 1500 and 2020-2026 Silverado & Sierra 2500 & 3500 trucks that are equipped with OEM incandescent bulbs.
  • Extended lifespan with LEDs that outlast halogen bulbs many times over
Vehicle fitment Fitment note

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THE BEST QUALITY POSSIBLE

Not all LED bulbs are created equal. A quality upgrade should deliver brighter, cleaner light across every application — without flickering, error codes, or installation headaches. At Boost Auto, we focus on LED quality first, using high-output components engineered to perform reliably mile after mile. The result is a noticeably brighter, crisper light output that looks and feels factory-correct, just better.

BOOST AUTO
OEM

OUTSHINES FACTORY LIGHTS

Factory 912/921 halogen bulbs were never designed to impress; they're dim, inefficient, and built to a minimum standard. Boost Auto's 912/921/T15 LEDs replace that dated technology with high-output LED light that's visibly brighter, cleaner, and whiter from the moment you plug them in. No wiring, no modifications, no compromises. Just a direct drop-in upgrade that outperforms the factory bulb in every measurable way.

LIFETIME TECHNICAL SUPPORT

Our commitment to our customers never ends. Whether you call our technical support team 10 minutes after ordering or 10 years after ordering, you will receive the same high quality of attention & care.

FAQ

Absolutely. All Boost Auto lighting products are backed by our 1 year warranty and lifetime technical support by our U.S.-based technical team.

No. These bulbs are built with flicker-free circuitry that works seamlessly with your vehicle's electrical system. No resistors needed.

These bulbs are over 2x brighter than factory halogen bulbs, delivering noticeably cleaner, whiter light from the moment you plug them in.
Just the bulb. These are direct plug-and-play replacement bulbs that drop into your existing factory housing; no assembly replacement needed.
None. These are a direct plug-and-play replacement; pull the old bulb out, plug this one in, done.

Boost Auto's 912/921/T15 LEDs are built to outlast your vehicle's original halogen bulbs; install them once and forget about them.

PEOPLE WHO CARE

WE ARE PASSIONATE
TRUCK OWNERS

Our team is made of automotive enthusiasts who drive trucks and SUV's. We spend our weekends working on our own vehicles, which is how we're able to deliver the best technical support and DIY install guides. We've been in your shoes many times before.

Because our employees are enthusiasts, many of our product ideas come from things we want to put on our own vehicles.

WHY CHOOSE BOOST

We might be biased, but we think the choice is clear. Boost is better...because of this:

LIFETIME TECHNICAL SUPPORT

Our commitment to our customers never ends. Whether you call our technical support team 10 minutes after ordering or 10 years after ordering, you will receive the same high quality of attention & care.

HELPFUL INSTALL VIDEOS

We know bad instructions suck, that's why we don't offer a single product on our site that doesn't have a detailed tutorial video. These videos are filmed by enthusiasts so we make sure you get the info you need in an easy to understand format.

1 YEAR WARRANTY

All of our products come with a 1 year warranty. Vehicle manufacturer warranties are typically 36,000 miles but vehicles last 200,000+ miles. You can rest assured our products are designed to last the lifetime of your vehicle as well.

CUSTOMER REVIEWS

QUALITY YOU CAN TRUST

All of our design & development, assembly & quality assurance takes place close to home, in our Northern Illinois Headquarters. Everything from 3D CAD design & prototyping to on-vehicle testing happens right here in America.

A PERFECT FIT

This ensures the accuracy of vehicle fitment across the entire range of trucks manufactured and sold in the United States

LOCAL SUPPORT

Plus, ALL of our support staff, ready to help you with your purchase, live here in West Chicago

Get In Touch

Call us

If you would like to speak to an associate via phone, please call us directly.

Customer Service Hours:

Monday - Friday: 9 am - 5 pm CST

(765) 831-2830

Email us

If your matter isn't urgent or it's outside of our customer service hours, you can email us at support@boostautoparts.com and we'll get back to you within 1 business day of your inquiry.

Visit our FAQs

We tend to think we've got some of your questions covered. If we aren't available, you can always check out our company FAQ page

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