Thumping while turning and braking

[bdorsch44]

Hey guys. Looking for a little help diagnosing what's wrong with my baby. Recently I've noticed a thumping sound coming from the front end of my trailblazer. it's been getting louder and can feel it lightly in the steering wheel. The something goes with speed so I think it maybe the bearings but I suppose it could be the CV joints as well. Has anyone else encountered this? how would I be able to differentiate between wheel bearings and CV joint sounds? any help is much appreciated!

 

[CaptainXL]

Lift the wheel off the ground, and check for movement in the wheel by grabbing it at 9 o'clock and 3 o'clock and shake. Then again at 12 o'clock and 6 o'clock, and shake. Any movement is a sign of a faulty bearing. If there is no movement, try spinning the wheel by hand, and see if you hear the noise.

 

[bdorsch44]

Great. I'll give the push pull maneuver a try. I had it jacked up and spun the wheels but couldn't replicate the noise. Forgive my ignorance, but I would have to replace the whole hub assembly as opposed to just changing the bearings correct?

 

[CaptainXL]

The hub bearings are not serviceable. They must be replaced as a unit. We have a lot of articles which should answer most questions here:Article Submissions

You want the third one down titled "How to replace front wheel hubs..."