Flat towing 2025 GMX Sierra 1500

[Toolguy]

Question.

We are still new to a Class A. Presently i tow a 2017 Equinox behind our Motorhome.
We just purchased a 2025 GMC Sierra 1500 4x4. I am considering flat towing behind Motorhome.
Before i get it set up to tow. Manual says to put Transfer case in neutral. This is easy enough to understand. Also it says to disconnect Battery so Parking brake does not engage. This where my question comes in. If battery is disconnected does it effect the unlocking of steering?

Thanks

 

[NWIP]

I have a 2023 GMC Sierra Elevation which doesn’t have steering wheel lock. Some models do and some don’t from what I understand. Mine tows great

 

[breal14]

My understanding from reading other posts is that you 100% have to be on flat ground so that the parking brake does not engage automatically. And then you put the truck into ACC mode right before you unhook the battery it seems. I've never done it... consult the manual:

https://cdn.dealereprocess.org/cdn/servicemanuals/gmc/2025-sierra1500.pdf

see page 413 for dingy tow instructions

 

[CaptainGizmo]

I’ve helped a couple friends with an Electric battery disconnect button on their new Yukon and Escalade.

Yes, the EPB is the bigger you must be careful with. But, following the procedure, neither of them have ever had issues; whether with the EPB or steering lock.