Results 1 to 27 of 27
Like Tree4Likes
  • 2 Post By The_Roadie
  • 1 Post By The_Roadie
  • 1 Post By Regulator

Thread: Metal on metal grinding noise, louder on right curve/turn

Get QR Code
http://gmtnation.com/showthread.php?t=4064
  1. #1
    Member

    Currently Offline
    37 Posts Since Jan 2012
    Indianapolis, IN

    Metal on metal grinding noise, louder on right curve/turn

    I have a 2005 GMC Envoy XL 4x4 4.2L and there's a noise that sounds almost like metal on metal grinding sound. It's not very loud but it's definitely there. However, I was able to drive 800+ miles back home from OBX without any problems.

    The noise gets louder on right turns and is pretty quiet on left turns. I recently changed the brake rotors, if that makes a difference. Any help is greatly appreciated.

    Thanks!

  2. #2
    Senior Member

    Currently Offline
    1,863 Posts Since Jan 2012
    Southern Maryland
    2004 Chevy TrailBlazer
    LS 4.2L I6 4X4
    Indigo Blue Metallic
    I would do a visual inspection, look for any unusual grinding, chips etc. It wouldn't hurt to turn the rotor and the wheel hub and see if you can feel or hear any thing out of the ordinary as well. Quite a few things that could cause it.

  3. #3
    Senior Member

    Currently Online
    3,394 Posts Since Dec 2011
    no where u need to know
    2007 Chevy TrailBlazer SS
    3SS 6.0L V8 AWD
    Black
    Its the dust sheild on the

    Sorry.....its the dust sheild rubbing on ur rotor. Take it off. Its bent.
    Last edited by MAY03LT; 07-01-2012 at 09:12 PM. Reason: merged posts, please use edit post

  4. #4
    Premium Supporter

    Currently Offline
    2,527 Posts Since Nov 2011
    Ohio
    2007 Chevy TrailBlazer SS
    1SS 6.0L V8 2WD
    Imperial Blue Metallic
    Quote Originally Posted by jrSS View Post
    Its the dust sheild on the

    Sorry.....its the dust sheild rubbing on ur rotor. Take it off. Its bent.
    i think i know what you mean

    to the OP, as suggested earlier, visually inspect things.. and since you just did brakes, i would tend to think its the shield as well... does the noise happen when youre driving on a straight road, or just turning and under load on one side or another?

  5. #5
    Administrator

    Currently Offline
    7,799 Posts Since Nov 2011
    North San Diego County, CA
    2004 GMC Envoy
    SLT 4.2L I6 4X4
    Liquid Silver Metallic
    And if not that, the hub bearings are usually sensitive to which way you're turning. How many miles?
    Matt and ksimm92 like this.

    GMTNation Abides
    - Bill
    From my Golden Age of Offroading (2005-2009): Trail Report & Picture Thread

  6. #6
    Member

    Currently Offline
    37 Posts Since Jan 2012
    Indianapolis, IN
    I'll check out shield tomorrow. Thanks.

    105,000 miles.

  7. #7
    Senior Member

    Currently Offline
    166 Posts Since Apr 2012
    Naperville, Illinois
    2004 Chevy TrailBlazer
    LS 4.2L I6 2WD
    Indigo Blue Metallic

    hub bearing

    I would defiantly check that hub bearing, spin it and feel for any slight vibrations ect.

    I had my passenger hub bearing start going bad around 110k , it had the same deal with getting louder/ quieter when turning left and right. I just replaced them both at the same time figuring the other one would go out soon. Pretty easy to do, if you have 4wd or awd you will need a 35mm socket to get the axle shaft nut off.

  8. #8
    Senior Member

    Currently Offline
    489 Posts Since Dec 2011
    Okanagan Falls, BC
    2010 Chevy Silverado
    Z71 5.3L V8 4X4
    Steel Gray Metallic
    i would say hub because mine is doing the same thing but worse and i have it in to 3 shops and was told all 3 times hubs are shot. so thats what i would say

  9. #9
    Member

    Currently Offline
    37 Posts Since Jan 2012
    Indianapolis, IN
    Called Autozone. Duralast (1 yr warr) is $99 and Timken (3 yr warr) is $169. Is Timken worth the premium?

  10. #10
    Senior Member

    Currently Offline
    216 Posts Since Jan 2012
    Lisle, IL
    2002 Chevy TrailBlazer
    LTZ 4.2L I6 4X4
    Majestic Red Metallic
    YMMW. To me, yes.

    BTW....is the noise low in tone, or is it a high-pitched scraping sound..?? High-pitched would be the rotor dust shield. Low and rumbly *might* be the hub bearing.

    As it stands, I intend on keeping this vehicle for quite a long time. The warranty is peace of mind. The more expensive hub bearings are also much better quality.

    I bought Moog w/ 3 year warranty from Advance Auto parts when they ran a 20% discount. I think they are running 15% discount codes right now. There are also online favs like Amazon and RockAuto too.

    Dave.
    148,xxx miles
    PCMforLess tune.
    The Wife's Daily Driver.

  11. #11
    Administrator

    Currently Offline
    7,799 Posts Since Nov 2011
    North San Diego County, CA
    2004 GMC Envoy
    SLT 4.2L I6 4X4
    Liquid Silver Metallic
    Quote Originally Posted by jemmie View Post
    Called Autozone. Duralast (1 yr warr) is $99 and Timken (3 yr warr) is $169. Is Timken worth the premium?
    Ask Autozone to declare the Country of Origin of each of those items. Take it from there. $99 bearings are likely to be CCC. Everybody should know by now what I mean by that acronym.

    GMTNation Abides
    - Bill
    From my Golden Age of Offroading (2005-2009): Trail Report & Picture Thread

  12. #12
    Senior Member

    Currently Offline
    1,294 Posts Since Dec 2011
    Ottawa, Ontario, Canada
    2002 Chevy TrailBlazer EXT
    LT 4.2L I6 4X4
    Black
    Just an FYI, Raybestos hubs are made in China and are crap. I had one unexpectedly grenade itself within a couple of months. Replaced those with Timken. I don't think anything but Timken is made in USA.

  13. #13
    Administrator

    Currently Offline
    7,799 Posts Since Nov 2011
    North San Diego County, CA
    2004 GMC Envoy
    SLT 4.2L I6 4X4
    Liquid Silver Metallic
    I had a couple of Michigan Bearings proudly made in USA units. I beat them to death as fast as any offshore crap. Back to Timkens for me.

    GMTNation Abides
    - Bill
    From my Golden Age of Offroading (2005-2009): Trail Report & Picture Thread

  14. #14
    Senior Member

    Currently Offline
    216 Posts Since Jan 2012
    Lisle, IL
    2002 Chevy TrailBlazer
    LTZ 4.2L I6 4X4
    Majestic Red Metallic
    Quote Originally Posted by the roadie View Post
    I had a couple of Michigan Bearings proudly made in USA units. I beat them to death as fast as any offshore crap. Back to Timkens for me.
    Me too. Didn't abuse them at all, and they still lasted just long enough to be shamed by their CCC bretheren..!!

    I figure Moog must be OK if they are prepared to put a 3yr warranty on them.
    148,xxx miles
    PCMforLess tune.
    The Wife's Daily Driver.

  15. #15
    Member

    Currently Offline
    37 Posts Since Jan 2012
    Indianapolis, IN
    I lifted the front end and tried a few things:

    1) Shake front wheels to see if there's any play. I couldn't feel any.
    2) Turned wheel while listening to bearings with stethoscope. I couldn't hear anything abnormal on either side.
    3) Examine dust shield to see if it's rubbing. Nothing.
    4) Turned steering all the way to the right and look at all three of the above (because noise seemed louder on right turns). Nothing.

    What's all this mean?

  16. #16
    Senior Member

    Currently Online
    3,394 Posts Since Dec 2011
    no where u need to know
    2007 Chevy TrailBlazer SS
    3SS 6.0L V8 AWD
    Black
    When my dust shields were rubbing I could spin the wheel while front in the air and hear the metal on metal noise. I couldn't actually see them rubbing tho till I took all apart and took them off. Maybe try that.
    If its the hub bearing then its usually the hub opposite of turning. So if u r turning left usually the right hub will grind.

  17. #17
    Member

    Currently Offline
    37 Posts Since Jan 2012
    Indianapolis, IN
    I don't hear the noise when I turn the wheels when the vehicle's front is lifted.

  18. #18
    Senior Member

    Currently Online
    3,394 Posts Since Dec 2011
    no where u need to know
    2007 Chevy TrailBlazer SS
    3SS 6.0L V8 AWD
    Black
    Then probably not the shields...that sucks.(easy fix)

  19. #19
    Administrator

    Currently Offline
    7,799 Posts Since Nov 2011
    North San Diego County, CA
    2004 GMC Envoy
    SLT 4.2L I6 4X4
    Liquid Silver Metallic
    Quote Originally Posted by jemmie View Post
    2) Turned wheel while listening to bearings with stethoscope. I couldn't hear anything abnormal on either side.
    When the wheel is in the air, the pressure is on the opposite side of the bearing race than when it's on the ground. Bearings often don't make noise until they're almost dead when you take the weight off.

    GMTNation Abides
    - Bill
    From my Golden Age of Offroading (2005-2009): Trail Report & Picture Thread

  20. #20
    Member

    Currently Offline
    37 Posts Since Jan 2012
    Indianapolis, IN
    Quote Originally Posted by the roadie View Post
    When the wheel is in the air, the pressure is on the opposite side of the bearing race than when it's on the ground. Bearings often don't make noise until they're almost dead when you take the weight off.
    That's what I guessed - thanks for confirming.

    So follow-up question is - If noise is louder when I am turning right, is it most likely left or right bearing? I'm just trying to avoid doing unnecessary work. The guy at Autozone says it's the right one. It seems to me it should be the left one because more weight is on the left side when I am turning right.

  21. #21
    Senior Member

    Currently Online
    3,394 Posts Since Dec 2011
    no where u need to know
    2007 Chevy TrailBlazer SS
    3SS 6.0L V8 AWD
    Black
    Quote Originally Posted by jemmie View Post
    That's what I guessed - thanks for confirming.

    So follow-up question is - If noise is louder when I am turning right, is it most likely left or right bearing? I'm just trying to avoid doing unnecessary work. The guy at Autozone says it's the right one. It seems to me it should be the left one because more weight is on the left side when I am turning right.
    Your MOST likely correct. Its usually the opposite side u turn.

  22. #22
    Administrator

    Currently Offline
    7,799 Posts Since Nov 2011
    North San Diego County, CA
    2004 GMC Envoy
    SLT 4.2L I6 4X4
    Liquid Silver Metallic
    Quote Originally Posted by jemmie View Post
    ...The guy at Autozone ...
    ...is not smart enough to be a mechanic. That's why he's a clerk at Autozone.
    McGMT likes this.

    GMTNation Abides
    - Bill
    From my Golden Age of Offroading (2005-2009): Trail Report & Picture Thread

  23. #23
    Senior Member

    Currently Offline
    2,429 Posts Since Nov 2011
    Warsaw, IN
    2002 GMC Envoy
    SLT 4.2L I6 4X4
    Onyx Black
    Change your left wheel bearing. That is more then likely the correct one to replace. Do not throw out the replaced wheel bearing though, if for some reason it turns out that your right side is the issue you can always put it back on the right side as the replacement. Just a suggestion.
    Matt likes this.
    Twenty years from now you will be more disappointed by the things that you didnít do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover. - Mark Twain

  24. #24
    Senior Member

    Currently Offline
    149 Posts Since Nov 2011
    Toronto, Canada
    2003 Chevy TrailBlazer EXT
    LT 4.2L I6 4X4
    Onyx Black
    It's definitely the dust shield.

    Take the wheel off and put a couple lugs back on, tightening them to get the rotor seated properly. Then run your fingers between the rotor and the dust shield, pushing it back wherever needed. It needs a minimum amount of clearance, so just because it's not touching anywhere doesn't mean it's not rubbing. It the shield seems to be too close, bend it back a bit

    Horsepower is how fast you hit a wall. Torque is how far you take that wall with you

  25. #25
    Member

    Currently Offline
    37 Posts Since Jan 2012
    Indianapolis, IN
    I changed the front left hub and it fixed the problem. It probably took under an hour.

    The question now is: Should I change front right hub as well or wait for it to tell me to change it?

  26. #26
    Premium Supporter

    Currently Offline
    2,527 Posts Since Nov 2011
    Ohio
    2007 Chevy TrailBlazer SS
    1SS 6.0L V8 2WD
    Imperial Blue Metallic
    Quote Originally Posted by jemmie View Post
    I changed the front left hub and it fixed the problem. It probably took under an hour.

    The question now is: Should I change front right hub as well or wait for it to tell me to change it?
    I'd wait until that one goes.. unless you want to do it for piece of mind... drivers side hub was changed at 23k miles... im still on the factory one on my passanger side... (knocking on wood now), no issues with either...

  27. #27
    Member

    Currently Offline
    37 Posts Since Jan 2012
    Indianapolis, IN
    Quote Originally Posted by Boricua SS View Post
    I'd wait until that one goes.. unless you want to do it for piece of mind... drivers side hub was changed at 23k miles... im still on the factory one on my passanger side... (knocking on wood now), no issues with either...
    That's what I'm leaning towards. This last time, from the time I first noticed the noise to when I changed it, I probably put 2000+ miles on it (trip to Outer Banks from Indiana) and the bearings held up. Of course, knowing Murphy's Law, the next time it's probably going to blow up instantaneously...

 

 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Copyright © 2014 vBulletin Solutions, Inc. All rights reserved | Hosting and Support by 423network
GMTNation ©2011-2014 All Rights Reserved. All trademarks referenced herein are property of their respective owners.