i have a 2001 ram 1500 with the 5.9 and 160,000 miles when hit 77 mph it starts to grind and i dont know what it could be if its like the output on the transfer case that broke and is loose or if wheelbearings are bad or a ujoint is gone because the trans just got rebuilt like a month ago and its still bad. Any help is very appricieted.

 

Moving this to the correct section.

2 or 4 wheel drive?

 

Try replacing ujoints in driveshaft. Easy, cheap and will cure many issues. I just did this and made a world of difference.

 

its a 4 wheel with the axle disconnect and its diconectedd so its not the front drive shaft at least

 

Drop the rear driveshaft, pull the tailhousing off the t-case. See if the snap ring that is supposed to be right next to that rear bearing is still there.

 

what could it be if its in the front end?

 

Inspect EVERYTHING in the drivetrain. Since it does it on the freeway, you can probably ignore the front drive shaft, but, check EVERYTHING else.

 

I said DRIVESHAFT not AXLE SHAFT. The big tube that goes to the rear pumpkin>? Yeah, that one has two u-joints in them. I would never ever have supposed you were driving 77mph in 4 wheel drive on pavement.

 

ok well i will have to get sometime so check everything its more annoying than hard on anything