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Atoms4Piece
02-20-2012, 04:53 PM
Replaced my front hub assemblies and then a weird harmonic vibration manifested. Whenever I drive it has a vibration noise that gets loutish then quiet. Constantly changes pitch from quiet to loud, only whole driving and doesn't change any pitch when turning left or right. Replaced the left (was told it was the culprit by two shops) hub assembly three times since then and it is STILL THERE!!!!! any ideas? Please help!!!

KillNThrill24
02-20-2012, 05:54 PM
Only thing I can suggest is to check the other hub. Just cuz the shop says it's bad doesn't mean it is... If not the other hub start checking things like axles, makes sure stupid things like rubbing of anything. Just a little rub can cause alot of issues

AaronGTR
02-20-2012, 06:04 PM
could be the CV joint instead of the hub.

Atoms4Piece
02-20-2012, 07:07 PM
I'm on it. I'll get it back in the shop tomorrow and keep up with progress.

Atoms4Piece
02-25-2012, 05:04 PM
Well, couple hundred bucks later. Both CV joints have been replaced, both hubs have been replaced (again) and the vibration is still there.... At this point I'm actually going crazy :| Ball joints and tie rods would NOT make this sound, it's a harmonic vibration that you can actually feel in the floorboard as you drive. It's so weird to explain you literally have to hear it. It's constant and only increases and decreases in pitch, it doesn't get faster or slower.

99grandam
02-25-2012, 05:09 PM
it can be your tires sometime they do that

Atoms4Piece
02-25-2012, 05:26 PM
Tires are in great condition and were rotated. Did that at the suspension shop on Tuesday. It's crazy. I am literally clueless, and so are most of the shops. My last resort is to replace the transmission. But I really don't want to do that right now. No one can give me a direct answer to what is causing it. It didn't surface until I replaced the hub assemblies.

99grandam
02-25-2012, 05:29 PM
well maybe you got bad wheel bearings you should try different ones first

Atoms4Piece
02-26-2012, 09:29 AM
I thought the wheel bearings were located in the hub assembly? If that's so, I've replaced them 2 times since the initial vibration sound.

FuriousG
02-26-2012, 09:57 AM
You said the tires were rotated but did the balance them too? Maybe you lost a tire weight and you've got an imbalance.

99grandam
02-26-2012, 10:06 AM
I thought the wheel bearings were located in the hub assembly? If that's so, I've replaced them 2 times since the initial vibration sound.

Yesss the wheel bearing and hub it's all one assembly did u put good wheel bearings in btw

99grandam
02-26-2012, 10:11 AM
Maybe your calipers are stiking have you check That

Atoms4Piece
02-26-2012, 10:55 AM
New calipers, new slotted rotors and ceramic brakes. I recorded a video of the noise, it doesn't register very loudly but it's there. I'll upload it in a few minutes.

Atoms4Piece
02-26-2012, 11:16 AM
I will also check the balance of the wheels. I just checked the video, the sound is DEFINITELY audible with the volume turned up a little bit. Check it out! Here it is (http://youtu.be/9UZAOZroOMA)

Atoms4Piece
02-26-2012, 06:41 PM
Just ordered some new outer tie rods and ball joints for the front end. Getting the tires rechecked again on Tuesday (school all day tomorrow), and I'll get the parts put on as soon as they arrive. Jeez... My front suspension is pretty much brand new at this point, haha.

99grandam
02-26-2012, 06:45 PM
I will also check the balance of the wheels. I just checked the video, the sound is DEFINITELY audible with the volume turned up a little bit. Check it out! Here it is (http://youtu.be/9UZAOZroOMA)

Holy crap sound like bad tires ahah

Atoms4Piece
02-26-2012, 07:02 PM
I thought that too, but the tires are all in good condition. It's weird :| They're all Falken Ziex tires. They all have GREAT (not good) GREAT tread on them.

99grandam
02-26-2012, 07:03 PM
Yaaa well hope you figure it out

Atoms4Piece
02-26-2012, 07:07 PM
I hope I do too, not just for me, but for anyone else that may fall into this horrible predicament. :(

Atoms4Piece
02-27-2012, 11:07 AM
Just went to Discount Tire, found out that one of my rims is corroding, but is still not the cause of my problem. Fixed this immediately, rebalanced the tires and it's still vibrating. At this point I'm considering going to an actual GM dealer around here and paying for a dealership diagnosis. After I have the tie rods and ball joints installed, if it's still vibrating, I'm going to a GM dealership and getting this sorted out.

psy7
02-27-2012, 12:26 PM
the harmonic vibration could possibly be bad harmonic balancer or the wheel bearing are bad even tho the hub assemblies are good

Atoms4Piece
02-27-2012, 12:47 PM
I thought the wheel bearings were located in the hub assembly on my car? I'll check out the harmonic balancer.

psy7
02-27-2012, 01:49 PM
they are located in the hubs but doesnt mean that the bearings cant be bad themselves

Atoms4Piece
02-27-2012, 04:01 PM
I'll buy another hub assembly and hope for the best this time, lol.

99grandam
02-27-2012, 04:13 PM
yaaa the wheel bearing and hub all in one if you dont torque the axle nut properly the wheel bearings can get loose and make that noise

99grandam
02-27-2012, 04:14 PM
I'll buy another hub assembly and hope for the best this time, lol.

did you replace both

Atoms4Piece
02-27-2012, 04:30 PM
I've replaced both. According to two different shops, it's the driver side front hub assembly. I've replaced that one TWICE. I'm hoping for a third times the charm, deal. I'm buying from a different place in hopes of getting one that isn't faulty.

99grandam
02-27-2012, 04:31 PM
I've replaced both. According to two different shops, it's the driver side front hub assembly. I've replaced that one TWICE. I'm hoping for a third times the charm, deal. I'm buying from a different place in hopes of getting one that isn't faulty.


well that good hope you get warranty on the other ones

Atoms4Piece
02-27-2012, 04:53 PM
12 month warranty. So they'll be getting a returned item, granted the new hub relieves me of this issue.

99grandam
02-27-2012, 06:35 PM
Yaaa hope that does the trick

2001gt
02-28-2012, 03:22 PM
i watched ur vid and saw u have an abs light on. and the humming noise is a very good sign its the wheel bearings. both good signs its ur wheel bearing

Atoms4Piece
03-08-2012, 12:17 PM
Well, found out what the problem is! Right hub bearing was completely screwed (how any of us missed that? I dunno, moment of stupidity I suppose). Left outer tie-rod was bad. AND LAST BUT NOT LEAST, the vibration noise was mainly coming from *wait for it* The TRANSMISSION!! Yay for Chassis Ears. Replacement transmission is in my garage, now just for the tedious task of swapping them out.

Edit: Was not the transmission, entirely, however the problem was located IN the transmission.

Atoms4Piece
03-08-2012, 12:18 PM
Oh, and the ABS light is on for a solenoid to assembly wire short. I'm gonna have to replace the wire harness between the brake pump and the passenger side hub assembly (which was also part of the culprit behind that noise).

Atoms4Piece
06-16-2012, 09:40 PM
I found the problem. While replacing another CV axle today, I accidentally pulled the output stub shaft with the cv axle. I noticed that it was slightly flattened (I mean SLIGHTLY) instead of rounded all the way around. The output stub shaft seems to be my problem, the question is.... Where the hell do I buy them at?

unchained_01
06-16-2012, 10:14 PM
You can buy that whole half shaft i rebuilt one should cost 70 and replace the seal too while your there !!
http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_New-CV-Axle-Shaft-Assembly-GSP_15870267-P_945_R%7CGRP60007_____

Atoms4Piece
06-16-2012, 10:45 PM
I have a new half shaft, this piece actually came OUT of the transmission, attached to the end of the old half-shaft. The new one didn't come with one. Here's a photo of the piece. It came off of the end that came out of the transmission. It looks like a sun gear shaft with a bearing on it. I don't know what the piece is and I can't seem to find anything on it...

http://img191.imageshack.us/img191/6786/img0716zf.jpg (http://imageshack.us/photo/my-images/191/img0716zf.jpg/)

Atoms4Piece
06-16-2012, 10:59 PM
I can't find the part numbers for either the shaft or the bearing piece around it.

Atoms4Piece
06-16-2012, 11:45 PM
Ok so the thing that I believed to be a bearing (I'm a dummy), is an output shaft seal. I'm still trying to figure out where to find the output stub shaft, though. Honestly, I'm thinking the seal is what is making the noise. It has slight faded grooves on it.

UndeadGods
06-17-2012, 08:56 AM
Why is the ABS the only light on and not Trac Off + Service Vehicle Soon?

Atoms4Piece
06-17-2012, 09:30 AM
Part of the wiring harness is cut under the car. That's what is throwing the ABS light.