Here is a summary of my procedure, not recommended for everyone, only a sample
1) Hook up to tow vehicle following tow hitch and tow vehicle manufacturers instructions
2) With D1 only, do the following
3) Start engine
4) Parking brake off
3) Place transmission in neutral
4) Place Transfer Case in neutral. Select drive momentarily to ensure D1 is not in gear.
5) Place transmision back in neutral
6) Turn engine off, key will remain in switch at 1 position