4x4 makes a loud grinding noise when pressure is applied on both 4 hi and 4 lo
any information on what it might be??
Yep, this group's as bad as ever ... twenty days and no answers for ya.
Ok, a stab in the dark since you didn't mention what transmission you have
and I don't know if you've fixed it or not ...
Manual trans: make sure clutch is disengaged while shift the transfer case
and (1) you are not turning but going straight and (2) you are not going
over 45 mph.
Auto transmission: shift to neutral before shifting into 4X4 and (1) and (2)
are the same as for the manual trans.
If that doesn't help, the transfer case may be worn out.