03 Ram QC 4X4 shakes at over 60 MPH

[01montana]

My truck starts to shake at over 60 MPH. Up to 60 it's as smooth as glass. I have had the tires balanced 3 times, had an alignment done, changed the rear tires, swapped the spare tire with the front tires and there is no change in the shaking . Checked the driveshaft its fine, u joints are tight. Ball joints and tie rods are tight. The only thing that seems a little off are the inner half shaft joints seem loose and have a lot of movement. What is the tolerance in the inner joints? When I grab the half shaft and move it, it moves about an inch in each direction. I bought the truck used with 131,000 miles on it and I do not have any history on what has been done to it in the past.

Thanks for any other ideas about what to check.

[troy1]

If they are loose they are probably shot. Also you could have a bend drive shaft or a u-joint thats locked up. I would pull the shafts off and have a look. If not your going to bust up the transfer case case. If you do have a bad u-joint only get the none greasable style, they cost more but you won't regret the extra cost later.

[WHATDIDYOUBREAKNOW]

had a mystery problem like that..turned out to be water in the tire

[01montana]

Thanks for the suggestions, I will check those items. I am pricing out half shafts now.

[draggin_man]

mine did the same for over a year before i figured out it was the axel shafts . i replaced front driveshaft and other things . does it smooth out when u put it in 4 wheel ?