03 Grand Cherokee Front Diff

[cfd_2214]

I am having some concerns about my front diff. When engaged in 4hi traveling about 20 mph. It vibrates the truck a little and when in 4low. You can hear a lite rumble. Any suggestions on where to start.

 

[96superflow]

It doesn't do anything in 2wd correct? Start at the front drive shaft. Pull it and check the u-joints/cv's. Then while the driveshaft is out, jump back in pull it in 4wd and try it again. Try and knock out one thing at a time...

 

[burrellsjeep]

Like stated I would start by checking the U Joints in the front driveshaft.

 

[cfd_2214]

right only happens in 4x4. The wife is going out of town this weekend time to check things out.