I have a 1996 Chevy Blazer 4x4 4.3 liter V6. I took it to Monro Muffler where they did an alignment lower ball joints on both sides in the front wheel bearing and wheel hub on the passenger side and an alignment and a new pitman arm. When they were done they told me that the brakes needed replaced as well. About 2 hours after I picked it up I noticed a high pitched whining noise coming from somewhere in the front of the vehicle ads in the suspension system or in the steering system somehow. I thought that it was brake noise so I put all new brake pads and new calipers on the front the rotors didn't need changed. It still makes this noise and I can't figure it out. Here is a link to a video I made trying to diagnose this noise. Thank you very much in advance.

What's this noise?: http://youtu.be/-oqc2ND_mIA

 

They may have over tightened the hub nut, But it definitely has to do with rotation of the wheel. There is a torque spec for the hub nut and if its to tight it wont last long. Does it go away when you brake?

 

No, it only seems to do it when I'm moving slow like going through drive thru or something. When I hit the brakes it still does it.

 

they put the new wheel bearing and hub on the passenger side but the noise sounds like it's coming from the driver side. The only thing they did over there was the lower ball joint on the driver side.

 

hmm, possibly just needs a bit before the brakes break in. Or somehow the wheel hub is going bad on that side

 

Sounds like a rotor backing plate rubbing on the rotor.

 

Ha, good call, never thought of that!