Front Grinding Sound . .

[pwsigmund]

I found the problem in my case which could be the same for you. Grab the CV where it meets the flange in the differential. Try to move it, up/down/left/right doesn't matter. If it moves it's bad. I now need to replace the output shaft bearing.

 

Wow, thanks I'll check that. Please report back what you do, and what you discover. Do you use 4WD a lot? I wouldn't have thought a bearing like that would have worn out if you don't do a lot of off road use. I'll be installing my new right side hub/bearing tomorrow, and I've got my fingers crossed that it solves the problem.

[pwsigmund]

I thought I'd report back the results. I replaced the right side hub yesterday, and the grinding is gone. So that hub bearing was bad, even though it had shown no looseness when I gave it the 12/6 test. The left one had been very loose and I replaced it last week. Apparently a bearing can be bad without loosening up. I guess the lesson learned is that if you're going to change one side, you should do both.

 

Thanks to all for the help along the way.

[jeeperman19]

I found the problem in my case which could be the same for you. Grab the CV where it meets the flange in the differential. Try to move it, up/down/left/right doesn't matter. If it moves it's bad. I now need to replace the output shaft bearing.

I'm a newb here and Sorry to bring an old thread back from the dead, my wife's Tahoe has play in that flange. How hard is it to replace the output shaft bearing?

[gmtech4]

I'm a newb here and Sorry to bring an old thread back from the dead, my wife's Tahoe has play in that flange. How hard is it to replace the output shaft bearing?

Is it leaking ?

 

If it's not , then what are we talking about ? , these axle shafts DO NOT have to be pressed in , that means there is some allowed movement , I've never replaced an axle shaft output bearing , so relax and get a professional inspection