New Product Spotlight: Complete Accessory Touch-Screen Auxiliary Switch Kits for Silverado EV, Sierra EV & Hummer EV
If you’ve looked into adding auxiliary switches to your new Silverado EV, Sierra EV, or Hummer EV, you’ve probably run into the same problem we did: GM Part# 86587305 looks great on paper, until you open the box.
GM gives you the module, harness, and hardware, but leaves you with an empty fuse block, no relays, no fuses, and no real instructions for how to hook up the lights, pods, or bars you want to power. In other words, you’re left paying for a fancy switch panel that can’t actually switch anything on.
At 404 Parts, we’ve fixed that headache.
Our 404 Exclusive kits take GM’s factory Accessory Touch-Screen Switch Kit and make it truly plug-and-play.
✅ Hongsfa relays and a fuse assortment so you don’t have to hunt down the right parts.
✅ A custom pre-wired pigtail that replaces GM’s dummy plug — so you get real, usable outputs.
✅ Free installation guide so you can get it done right, or take it to your local GM dealer already set up for success.
One Part Number. Full Compatibility. Zero Guesswork.
Whether you own a Silverado EV, Sierra EV, or Hummer EV Pickup or SUV, our upgraded kit covers it all:
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2024–2026 Chevrolet Silverado EV
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2024–2026 GMC Sierra EV
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2022–2026 GMC Hummer EV Pickup
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2024–2026 GMC Hummer EV SUV
So, instead of wasting time piecing together your own relays, fuses, and wiring, you get everything in one box, with the OEM parts plus the custom bits that actually make it work.
One Part Number. Full Compatibility. Zero Guesswork.
Whether you drive a Silverado EV, Sierra EV, or Hummer EV Pickup or SUV, our upgraded kit covers it all:
So, instead of wasting time piecing together your own relays, fuses, and wiring, you get everything in one box — Genuine GM plus the 404 Exclusive components that actually make it work.
Ready to Power Up Your EV?
Shop the kits individually for your Silverado EV, Sierra EV, or Hummer EV — all with free shipping and our exclusive 404 install guide.
👉 Check out the new kits now and get your switch game dialed in.
Questions? Hit us up — our team actually knows these parts inside and out.