Bernard Sarazin

What is needed to make this change? do I need software or hardware or both can I just get HMI reprogrammed?

Does anyone know if it can be done

I have onstage nav but would like the maps. can you have both 2018 2500 GMC

Here is a new idea for a project look at the block heater plug on the 2020 hd where it is part of the fender .

I will keep an eye on it and if it moves I will make it stringer

please point me to this tpms trailer post

right now without the wires going to X61A the light work as advertised. they turn on and off when selected. each switch supplies a ground for the relays at X50a

ok I see this would make sense if you use aftermarket relays but I plan on using the factory upfitter at X50a not sure how I could add these diodes. the latest ui bulletin states to delete earlier bulletins I'm looking at 110m. Do you have a source for the terminals maybe you could sell me some so I could run all the wires from s48a to X61A then x50a and some extra as I also want to retire my second fuel pump relay for my off road lights

again why the diodes as they are not in the factory drawings. also I know I could go around X61A but I really don't want to. if I could get the terminals I will make the wires

What about adding the tpms for the trailer to a 2018

when your back from holiday this is what I want from you.

switch for sale 25

I'm also needing the terminals so I can make the wires from X61A to X50A upfitter page parts are #19301761 #19301767

are you selling this harness Ok I read all this thread and have some big questions. for example the wires that go to the BCM to turn the light on the dash on where did that information come from. also if this works like the foglamps why don't we know which pin exiting the BCM is not used to control a relay. just like the foglamps. I started down this path with my main goal of keeping the truck looking factory. so if the BCM does have circuits that supply a ground or signal to control a relay I would like to know. are you selling this harness