I was in a hurry when coming off a trail the other day and forgot to disengage 4wd (high) and proceeded to drive about 4 or 5 miles at 70 mph before i noticed and turned it off... what could happen if anything?

I've been noticing a rubbing sound when turning but i think that started before and i'm paranoid.

 

sounds like you better start checking these things whenever you leave the trail, as that could definitely cause some damage if you would've kept on driving. but i just posted something on your other thread about the "rubbing" issue...

 

It shouldn't be any problem at all since it is an 02 with multimode --- unless you had the center diff locked.

 

Yup, with the 2001/02 you can drive forever in 4HI. All you did was burn a few extra ounces of gas.

 

as others have mentioned, you can drive all you want in 4WD HI, shouldn't be a problem at all. As a matter of fact, it is even recommended to drive 30-50 miles per month in 4WD so your gears will be properly lubricated.