Body Control Module

[BlackZ51Vett]

Anyone have knowledge on which color BCM module and what color wire controls the interior lights? I’ve added some LED interior lights and I want them to work like factory with the doors open an close.

[Lines Of Code]

On 9/6/2023 at 12:02 PM, BlackZ51Vett said:

Anyone have knowledge on which color BCM module and what color wire controls the interior lights? I’ve added some LED interior lights and I want them to work like factory with the doors open an close.

I assumed your vehicle is a 2021 Chevrolet Silverado LT and used a 5.3. I've attached the wiring diagrams 2 parts for the interior lights for your truck. The diagrams were available from my local library online auto repair source. Check into it at your local pubic library they often offer an auto repair source online. There's 4 more diagrams for Interior Light Dimming but left them out.  Hope this helps!

2021 Silverado LT Interior Lights 1.pdf 2021 Silverado LT Interior Lights 2.pdf

[BlackZ51Vett]

Thanks for the info. I found the whole electrical system on line, including the pin outs for all seven BCM modules.

[Lisagkay]

Anyone have the diagrams for a 2023 Sierra 1500?

[BlackZ51Vett]

https://www.gmupfitter.com/wp-content/uploads/2022/10/23_Silverado_1500_Electrical_Body_Builder_SM_en_US_2022OCT24.pdf