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 trucks 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.
Installation Video: https://youtu.be/uXQqv4QkbBc
Fitment: 2019 2020 2021 and 2022 Silverado and Sierra 1500 (New T1 Body Style). 2020 2021 and 2022 Silverado and Sierra 2500 3500 (including Duramax diesel).