Genuine GM Parts
Upgrade your GMC Sierra HD with this Genuine GM Upfitter Auxiliary Switch Kit. Designed specifically for 2024–2025 GMC Sierra AT4, AT4X, Denali HD, and Denali Ultimate 2500/3500, this premium bundle adds five fully functional auxiliary switches with no programming required—perfect for powering lights, accessories, and other 12V add-ons.
Features:
✔ Genuine GM Parts – Ensures quality, durability, and a precise factory fit.
✔ 5-Bank OE Auxiliary Switches – Connect up to five 12V accessories using the included outputs.
✔ OEM Center Console Panel & Fuse Block – Seamless integration and easy installation.
✔ Complete Hardware Kit – Includes fuses, fasteners, and wiring essentials.
✔ Free Installation Guide – Included for professional installation assistance.
✔ Free Shipping Options – Delivered straight to your door at no extra charge.
📌 Installation Note:
Per GM, the fuse block is meant to be secured to the truck’s HVAC with a zip tie—a solution that appears to reflect some design oversight. For a cleaner, more secure setup, many customers choose to add our Upfitter Switch Extension, which allows for a bolted-in installation instead of relying on a zip tie.
👉 See the “Frequently Bought Together” option above to add both the Auxiliary Switch Kit and the Extension to your cart with one click.
Vehicle Fitment:
2024 GMC Sierra AT4 HD 2500 / 3500
2025 GMC Sierra AT4 HD 2500 / 3500
2024 GMC Sierra AT4X HD 2500 / 3500
2025 GMC Sierra AT4X HD 2500 / 3500
2024 GMC Sierra Denali HD 2500 / 3500
2025 GMC Sierra Denali HD 2500 / 3500
2024 GMC Sierra Denali Ultimate HD 2500 / 3500
2025 GMC Sierra Denali Ultimate HD 2500 / 3500
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California Residents:
California Prop 65 WARNING: Cancer and Reproductive Harm. For more information go to https://www.P65Warnings.ca.gov