2003 Chev Blazer, 4WD, LS


So about two weeks ago i had a howl that Began around 55 MPH and stoped around 60 MPH. The Noise went away after around a week. I beleve the noise was coming from the drivers side front wheel.

Now when I get over 30 MPH I get a loud howl and it does not go away.

Last Night I put my truck up on stands and ran it. when just the rear wheels are in motion there is not vibration, But when I put the truck into 4WD and put the front wheels into motion then the Vibration/Howl begins. When holding the Drivers side tire from not moving I can see movment inside the CV joint boot. So I beleve it is a faulty CV Joint..

How do I test for faulty CV Joints?

FYI I checked fluid levels in both Front/Rear Differentials and both are full.



Any More input would be Very much appreciated.

 

Does the noise change at all when you turn right or left? Wheel bearing problems are common. Have you cranked your torsion bars at all? This can cause premature wear on the CV shafts.

 

No noise doesnt change at all when turning, And No i havnt cranked the T-Bars either. After further inspection and a ride with a mechanic we are looking at a thrown bearing in the Transfer case possibly.