Question Towing 2022 GMC Sierra Denali 1500 Limited

[Chuckb19]

I have a 2022 Sierra Denali 1500. I had a "positive terminal" cutoff switch installed. I'll start by saying g please don't send a picture of your owners manual as I received in another thread. This is a unique situation and the manual does not apply. There are specific steps starting with getting transfer case in Neutral, then shifter to Park and shut off engine. It's at this point that there's a pause/wait and I'm unsure of the exact time? If anyone has the Roadmaster positive terminal cutoff switch and knows the "EXACT" process, I would sure appreciate some advice. I believe I got it to work once. But I'm having difficulty repeating what was done. Again, appreciate anyone who knows the exact steps including how long to wait before pressing cutoff button.
Thank you.

 

[breal14]

but it is the same process as the manual.
in step 8 instead of taking out a 10mm socket to un-do the battery, you just flip that switch which effectively cuts the power circuit....