DIY: How to Replace Third Brake Light & Cargo Lamp Bulbs [2014 - 2019 Chevy Silverado & GMC Sierra]

In this comprehensive tutorial, learn how to easily replace the third brake light and cargo lamp bulbs on your 2014 - 2019 Chevy Silverado or GMC Sierra truck. Whether you're experiencing a burnt-out bulb or simply want to upgrade to brighter LEDs, this step-by-step guide has got you covered.
Parts needed for this fix:
GM Part Number: 23509162
Light bulb number: 921
Grab everything you need off of Amazon here:
AC Delco High Mount Lamp Replacement: amzn.to/493kNtb
Less expensive high mount lamp replacement with integrated LED bulbs (we have not tested it): amzn.to/4ctSEOz
Light Bulb #921:
SYLVANIA (2 pack) amzn.to/43u85Cy
SYLVANIA (10 pack) amzn.to/4a4oeRH
Don't let a malfunctioning brake light compromise your safety on the road. Follow along with our easy-to-follow instructions and keep your Chevy Silverado or GMC Sierra shining bright. Subscribe for more helpful DIY tutorials and maintenance tips!
Keywords:
Chevy Silverado, GMC Sierra, 2014, 2015, 2016, 2017, 2018, 2019, third brake light, cargo lamp, bulb replacement, DIY tutorial, maintenance tips, truck maintenance, LED bulbs, safety, easy guide, step-by-step tutorial.
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[@JR-if4cf]

You should consider putting in an LED light bulb next time. It will last longer.

[@TheBrothersWorkshop]

🤙🙌

[@sarahwhitmire8353]

Mine is also out. Ive changed the bulbs, and found that wasnt the issue. I checked the fuse and that also wasnt the issue. I replaced the wiring harness with OEM harness and again its still not working.. Any ideas???

[@TheBrothersWorkshop]

That's interesting.

[@bradmaunders1733]

Did not know burned out until went for the inspection sticker! Did not indicate here what hex is needed...

[@TheBrothersWorkshop]

Yeah, that happens since we are always driving and never really see the rear of the vehicle in use.