I have the dealer supplied Auxiliary switch upfitter package - how to get through the firewall on a 2024 3500 HD gas engine truck?

Ronald Saumure · August 18, 2023

The harness came with my 2025 Sierra 2500HD but the switches are installed. Why was the harness not installed at the assembly time is a good question. My dealer quoted my $1600 for installation.

JCunningham · August 18, 2023

so the dealer can price gouge you.

JCunningham · October 9, 2023

look whats available but price on this sight is $495. the 20-23 kit can be had new for $190. same kit just a different trim piece that cost $48. switches are not available yet. https://404parts.com/products/2024-silverado-sierra-hd-upfitter-auxiliary-switches-package?variant=44999220002986

Edited October 9, 2023 by JCunningham

JCunningham · October 9, 2023

delete

Edited October 9, 2023 by JCunningham

JCunningham · February 17

My 87866808 switches just came in at the dealer. now I have everything to install upfitter switches on my 22.5 refresh. new 193c bulletin out /https://www.gmupfitter.com/wp-content/uploads/2023/08/UI-Bulletin-193c-2.pdf

UI-Bulletin-193c-2.pdf

Edited February 17 by JCunningham