How do you turn OFF this feature on a truck without the DIC controls on the wheel?

its in your manual. has to do with your brake petal with the ignition on and motor off i think

It only tells how to turn it on. Not off.

I put a link in your Ask the Tech posting. Looks like it is the same procedure for On/off. Must toggle between them each time.

Thank you . I'll try it again.

yep same thing turns it on and off