(1) There is no reason you can't use that switch on the ground side. Buy it, install it on ground at battery, and enjoy. You're welcome.
(2) Vehicle MUST be in park and transfer case in neutral at all times while moving. I know a guy who failed to do that, left transmission in neutral as well, and his reward was needing a new transmission after the first such tow. The reason being that with the fluid couplings in torque converter (and elsewhere) there was just enough rotational force transferred to cause the transmission internals to rotate, albeit slowly, but without proper lube since the transmission fluid pump wasn't being rotated, that it burned up all the bearings in the transmission. Granted it wasn't a 2025 or a GMC, but the design of things and instructions were the same.
(3) And yes, the truck stays in ACC mode the whole trip to keep the steering from locking up.
Thanks
so with battery disconnected the truck will stay in ACC mode?
I would have to look at battery switch again to see how it would get power if hooked to negative side.
Dan
