Corvette Action Center - The ultimate online hub of Corvette news and information! Click here to go to the Corvette Forums!

Supporting Vendors / Dealers - Supporting Membership - Advertising Information - Corvette Amazon Shop
Results 1 to 9 of 9

Thread: clunky rear end

  1. #1
    New Member
    Join Date
    Aug 2008
    Location
    hastings mn
    Posts
    4
    Corvette(s)
    2000 coup 2009 coup

    Default clunky rear end

    Has any one solved the clunk in the rear end on the C-6 yet?
    I live in Minnesota and in the cold weather the rear end seems to bind and snap when turning sharp at low speeds. The dealer has replaced the rear end fluid but there is no improvement. This was never a problem on my previous Vetts. It's my understanding this is a different rear end than the C-5?
    I suspect it's a cheaper no slip setup than the old one.
    Glenn krick 612 964 6777
    glennkrick@gmail.com

  2. #2
    Dad
    Dad's Avatar
    Join Date
    Nov 2001
    Location
    West Unity OH
    Posts
    835
    Corvette(s)
    05Silver/Red6spd 72Blk/Blk4Spd 64Red/Red/Wht4spd

    Default

    Check your rear axel nuts and replace them if they are loose. Mine have been replaced for that very reason and they were very loose. Crap engineering to smash the nut hexagon to deform the thread; which also deforms the face and doesn’t allow good face contact at torque.

    There is a TSB out on the issue.

    C6 has been to 20 states, 49K miles and counting... slowly, more fun driving the '64 and the '72.

  3. #3
    New Member
    Join Date
    Aug 2008
    Location
    hastings mn
    Posts
    4
    Corvette(s)
    2000 coup 2009 coup

    Default

    Thanks for the help. Are you referring to the lug nuts?
    Glenn

  4. #4
    Tuna's Avatar
    Join Date
    Mar 2003
    Location
    Mustang, OK
    Posts
    3,368
    Corvette(s)
    '13 427 60th (+V Wagon & Volt)

    Default

    If the clunk goes away as the car warms up, then the rear differential probably needs service to replace the fluid with new stuff.

    I have not experienced any rear end noise with my '08 but my '06 has had to have the rear end fluid replaced twice - haven't had any clunking noises in a while now.
    Tuna
    NCM Lifer - NCM Fighter Squadron
    2014 Caravan Captain - OK/TX Panhandle
    Central OK CC - Lone Star CC

  5. #5
    Dad
    Dad's Avatar
    Join Date
    Nov 2001
    Location
    West Unity OH
    Posts
    835
    Corvette(s)
    05Silver/Red6spd 72Blk/Blk4Spd 64Red/Red/Wht4spd

    Default

    Quote Originally Posted by glennkrick View Post
    Thanks for the help. Are you referring to the lug nuts?
    Quote Originally Posted by glennkrick View Post
    Glenn


    No, I'm talking about part number 10257766 drive shaft/axel nut (made in India). One per axel. It can snap so loud that you can hear it outside the car. I was on the verg of changing my CV joints it was so bad. Then my local Chervrolet tech said to check the nuts first after the fluid change did no good.

    Side note, the picture in the manual shows the punch locking the brake disc for a left hand thread, not ture. Just a cheap way to reuse illustration number 174557 on page N-90.

  6. #6
    Member
    Join Date
    Sep 2006
    Location
    Carlsbad,Ca.
    Posts
    872
    Corvette(s)
    2006 C6Z DSOM

    Default

    The rear axle nut looks like this~

  7. #7
    Technical Advisor c4c5specialist's Avatar
    Join Date
    May 2001
    Location
    New Haven, Ct. USA
    Posts
    3,742
    Corvette(s)
    Nope, but someday.

    Default

    HI there,
    POST the differential fluid that was used at the dealer.

    Allthebest, c4c5
    GM World Class Certified Technician.
    Like us: www.facebook.com/corvettemechanic
    http://twitter.com/GMvettemechanic
    http://thecorvettemechanic.com
    Podcast: Itunes, search 'the corvette mechanic'

  8. #8
    Dad
    Dad's Avatar
    Join Date
    Nov 2001
    Location
    West Unity OH
    Posts
    835
    Corvette(s)
    05Silver/Red6spd 72Blk/Blk4Spd 64Red/Red/Wht4spd

    Default

    THIS is what was on their service sheet, Dextron LS Gear Oil 75W-90 (GM part part #88862624). I have to think that they might have changed it because the parts man told me they had to buy a case and most likely would never use it up. Think he may have been pulling my leg. On the other hand at the cost of it they may never have put it in, just drove it around the parking lot in figure 8s.

    Why did you want that information? Does this particular fluid have known failures? Is there a later fluid out? If so please enlighten the group.

    C6 has been to 20 states, 49K miles and counting... slowly, more fun driving the '64 and the '72.

  9. #9
    Technical Advisor c4c5specialist's Avatar
    Join Date
    May 2001
    Location
    New Haven, Ct. USA
    Posts
    3,742
    Corvette(s)
    Nope, but someday.

    Default

    Hi there,
    That is the correct fluid and if they dont have it in stock, I would be worried.

    This fluid is the absolute BEST FOR C5 and C6 differentials.

    Allthebest, c4c5
    GM World Class Certified Technician.
    Like us: www.facebook.com/corvettemechanic
    http://twitter.com/GMvettemechanic
    http://thecorvettemechanic.com
    Podcast: Itunes, search 'the corvette mechanic'

Similar Threads

  1. Project Rear End 2007
    By Andy.E in forum C1 & C2 General and Technical Discussion
    Replies: 4
    Last Post: 02-21-07, 09:03 PM
  2. Rear End Ratio & Acceleration
    By SSTibet in forum C4 Technical and Performance
    Replies: 11
    Last Post: 12-01-04, 09:46 AM
  3. Rear End
    By klb76 in forum C3 Technical and Performance
    Replies: 20
    Last Post: 02-28-03, 07:26 PM
  4. Rear end has mind of its own
    By Dave M in forum C3 Technical and Performance
    Replies: 6
    Last Post: 01-15-02, 03:45 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© CORVETTE is a registered trademark of the General Motors Corporation & Chevrolet Motor Division.  Neither Chevrolet Motor Division nor any subsidiaries of GM© shall bear any responsibility for CorvetteActionCenter.com content, comments, or advertising. CorvetteActionCenter.com is independent from GM© and is not affiliated with, sponsored or supported by GM©.  Copyright/trademark/sales mark infringements are not intended, or implied.  All Rights Reserved