2000 durango rt all time 4 wheel drive. Problem is the front diff locks without putting it in 4 hi.. also when I use 4wd it wont unlock until i drive 50 or 60 miles then WHAM!!!!.. Any input would be great!!! Thanks in advance...

 

???

If it is Full Time 4x4, it is already in 4 wheel drive before you do anything.

Also, there is no limited slip on the front diff. Thus, if it is locking up at all, it is trashed. Get it serviced.

IndyDurango