GM Part# 86587305 Genuine GM Accessory Touch Screen Auxiliary Switches Kit

The complete factory accessory control solution for your Hummer EV, Sierra EV, and Silverado EV.

Most listings only sell the basic GM module. That version arrives with a module, a small harness, and mounting hardware but nothing else. No relays. No fuses. No output wiring. Nothing that actually lets you power an accessory. Customers open the box and instantly realize they still cannot run a single light.

404 Parts solves this problem the right way. Our 404 Exclusive Bundle finishes what GM started by including every component needed to make the system fully functional. You get the Genuine GM module plus all relays, fuses, and a pre-wired output pigtail that ties directly into the system. No guessing. No extra shopping. No incomplete kits. Just a true factory-style accessory control setup ready to use.

This is the complete version that customers expect but never receive anywhere else.

Features

✔ Genuine GM Part 86587305 including official GM module, harness, and installation hardware
✔ Full infotainment screen integration with control of up to six external accessories and a total output capacity of 60 amps
✔ Customizable Off Road app interface with 24 selectable icons and custom naming for each accessory
✔ 404 Exclusive Complete Bundle including a fuse block, premium Hongsfa relays, full fuse assortment, pre-wired six-output pigtail, and solder connectors
✔ True plug and play installation with no missing parts
✔ Free Installation Guide included
✔ Free shipping included

This is the only listing that delivers the complete, ready-to-use system as GM intended.

Vehicle Fitment

Compatible with the factory Accessory Touch Screen Control System on:

• 2022 to 2026 GMC Hummer EV Pickup

• 2024 to 2026 GMC Hummer EV SUV

• 2024 to 2026 GMC Sierra EV

• 2024 to 2026 Chevrolet Silverado EV

If your vehicle supports the infotainment accessory control interface, this is the required GM module.