i have 1999 durango with some problems 1) us when driving down da road the truck quits moving but the rpms are high you have to take it out of gear then put it back and it will move 2) is when in 4h it makes a whining noise when your in drive or reverse plzzz help ........

 

1st problem sounds like the tranny but it could be many different things check your fluid level after that I would say take it to a shop. 2nd problem from what I have read on here is the rear diff.