Factory Auxiliary Upfitter Switch Install | 2024 Chevrolet Silverado 2500HD LTZ

Full install of the factory auxiliary upfitter switch system on a GM HD truck, shown on a 2024 Chevrolet Silverado 2500HD LTZ with the uplevel dash and bucket seats. If you want OEM auxiliary switches but don’t want to wait for a custom-order truck, this video walks through the complete process step by step. I cover where everything plugs in, how GM designed the system, and the issues you’re likely to run into at the dealer when sourcing parts. While this install is shown on a 2024 Silverado 2500HD LTZ, the factory GM auxiliary upfitter switch system is similar across many Silverado and Sierra HD trucks. Interior trim, dash layout, and switch location can vary by year and configuration, which may change part numbers and mounting pieces. Those differences are noted where applicable. All part numbers used are shown in the video to make this as straightforward as possible for the next person doing the job. Edit / Update: GM later identified the correct harness as 86812139. This harness was not listed on GM’s website at the time of filming and has not been personally tested in this video. In the video, I show how I modified the harness I was supplied to make the system work. Second Battery Installation Video:    • Second Battery Installation Just Like The ...   🧢 Adventure & Repeat merch helps support future projects and videos. https://adventureandrepeat.shop #adventureandrepeat #adventure #diy #automobile #truck #chevy #chevrolet #silverado #silverado2500hd #ltz #mechanic #upgrade #switch #offroad #offroad4x4 All Rights Reserved To Adventure & Repeat LLC