That's about 4-5 build versions old if you have the 8 inch IOS or IOT radio. V155 is the number that tells you what version of software it has. Newest IOS/IOT radio software is V171 which was released June 2024.
You'd have to pay out of pocket for the update at the dealer. TSB on the current software is 24-NA-108. MC-11004657-0001.pdf
You'd be the first to make it happen if you tried it that I know of.
You'd have to order a pair of option code DLF mirrors for a Chevy HD truck, and then attempt to swap all the components from those LTZ 1500 mirrors you bought on to the DLF HD mirror mount.
If it would work.
For anyone checking out the M&R Automotive 50" PRO Roof Light Bar for the 2022+ GMC Hummer EV, here’s an install video that gives you a closer look at how the roof-mounted setup comes together.
It walks through the mounting process and shows how the curved 50" PRO fits along the roofline, which should be helpful if you’re considering the setup and want to see what the install involves.
Hope this helps anyone thinking about adding the 50" PRO to their Hummer EV!
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