Engage into 4hi

I was wondering if anybody knew the proper way to engage the electronic 4x4. Should you be driving or pulled over with the transmission in neutral. Any suggestions........
thanks Dan


1999 Chevy tahoe
5.7 V-8

You are supossed to switch to 4wd hi on the go. Don't do it while you are stopped. That's what your transfer case is for, to transfer it into 4wd on the go. Have fun!

4 hi -shift at any speed.
4 lo -shift at stopped or less than 3 mph with vehicle in NEUTRAL- the same if shifting from 4 lo to either 4 hi or 2 hi