This will get the center high mount stop lamp (CHMSL) cargo lights on your Silverado or Sierra to work as both a cargo light and a reverse lamp. This will also enable your rear-facing tailgate cargo light (if equipped) to come on in reverse. The truck's cargo lights will also illuminate when you unlock the truck with the key fob at night as a courtesy lamp. The installation is very easy and takes less than 5 minutes while following our installation video.
Important Note: This harness will not activate your tow mirror cargo lights in reverse. If you'd like your tow mirror cargo lights to come on in reverse, you will need to purchase a supplemental cargo and reverse harness HERE.
Link to Install Application A (3:52): https://youtu.be/uXQqv4QkbBc
Application A applies to the following vehicles:
- 2019-2021 Chevy Silverado 1500
- 2019-2021 GMC Sierra 1500
- 2020-2022 Chevy Silverado 2500/3500
- 2020-2022 GMC Sierra 2500/3500
- 2022 Chevy Silverado 1500 LD
- 2022 GMC Sierra 1500 LTD
Link to Install Application B (3:29): https://youtu.be/YnniromfCkc
Application B applies to the following vehicles:
- 2022 Chevy Silverado 1500 Refreshed
- 2022 GMC Sierra 1500 Refreshed
Fitment - This product fits the following vehicles (Including T1 New Body Style and Duramax diesel):
2019 Chevy Silverado 1500
2020 Chevy Silverado 1500 / 2500HD / 3500HD
2021 Chevy Silverado 1500 / 2500HD / 3500HD
2022 Chevy Silverado 1500 LD (More Info: LD v.s. Refreshed)
2022 Chevy Silverado 1500 Refreshed (More Info: LD v.s. Refreshed)
2022 Chevy Silverado 2500HD / 3500HD
2019 GMC Sierra 1500
2020 GMC Sierra 1500 / 2500HD / 3500HD
2021 GMC Sierra 1500 / 2500HD / 3500HD
2022 GMC Sierra 1500 LTD (More Info: LTD v.s. Refreshed)
2022 GMC Sierra 1500 Refreshed (More Info: LD v.s. Refreshed)
2022 GMC Sierra 2500HD / 3500HD
Reviews
- Reviews
- Questions

Bright
It makes a difference in Dark areas. It’s a great investment. I recommend this for all trucks.

Awesome stuff!
Easy to install and works great! Thanks for making such a simple easy upgrade for my Vehicle lighting.

Works Perfectly - ‘21 Silverado RST
Super easy install using the provided instructions. Works just as described! This is my 2nd mod from Boost Auto. Both are awesome! Highly recommend.

So easy a caveman can do it
Hands down worth the money took me 10 minutes to do and works great definitely that fastest shipping I’ve seen got it in like 2 days

Easily installed
Item was delivered fast and works great. Can't beat it for the price.