Clunking in Rearend
Thread Starter
Safety Car
Joined: May 2002
Posts: 4,485
Likes: 0
From: Austin Texas
Clunking in Rearend
Has anyone experienced a heavy clunking noise in the rearend on an 01 MN6? It's had a clicking noise for months, and was at the dealer twice to no avail. The dealer replaced both lower control arms and then declared themselves befuddled with the continued clicking. In any case, today it began clunking, most predominantly during turns. Also, when in neutral, you can hear a faint grinding noise (with your ear next to the wheel). Really unpleasant sounding. To top it off, the top (convertible) leaked like a sieve during our heavy rains in the last week. So, I get to take a sodden, clunking Vette to the dealer tomorrow. Does anyone have any recommendations on what I ought to do vis a vis the dealer? (besides the obvious, which is to throw a fit). Appreciate any advice. thanks
Safety Car
Joined: Feb 2001
Posts: 3,569
Likes: 0
From: Greenville NC
Re: Clunking in Rearend (bluebonnet)
Does it happen more during slow parking lot manuvers (slow turns)?... I have clunking and some scrubing, I'm pretty sure its the limited slip rear end not releasing on turns. I'm taking it his week to have the fluid changed (I had a rear end leak and think the dealer didn't add the limited slip lube back), if that doesn't work I'm going to try aftermarket synthetic fluid (Redline or Amsoil), they have the limited slip additive built in.
Team Owner
Joined: Mar 1999
Posts: 28,753
Likes: 9
From: San Jose/Bear Valley CA
CA Events Coordinator
Re: Clunking in Rearend (bluebonnet)
sounds like you have serious problems. Be sure the car does not leave the shop till it is fixed correctly. :yesnod:
vetterdstr :cheers:
vetterdstr :cheers:
Burning Brakes
Joined: Aug 2000
Posts: 1,132
Likes: 1
From: Morganton, NC, USA
Re: Clunking in Rearend (vetterdstr)
I had a '78 that developed clunking in the differential every couple years. Sounded like a couple of bolts getting ground up by the gears; really bad. All it took to fix was the addition of the GM Positraction additive. Once you are used to this, the anxiety goes away. :yesnod:
Pro
Joined: Sep 2001
Posts: 644
Likes: 0
From: Oklahoma City OK
Re: Clunking in Rearend (bluebonnet)
I am experiencing the very same thing by the sound of it. Mostly manuvering in parking lots in and out of the driveway etc. It is a very same clunck. I added redline gear oil last weekend, but it still does it. If you solve the delima let us know.
:confused: Tod
:confused: Tod
Safety Car
Joined: Jun 2000
Posts: 3,583
Likes: 0
From: Leesburg Va
Re: Clunking in Rearend (GraveDigger)
I had an intermittent clunk from my rear, usually heard during slow speed turns (parking lots, turning into the driveway). Turned out to be one of the end links was loose. I had someone start to do my exhaust, I wasn't happy with what he was doing so I had him stop. Anyway he didn't tighten one of the end links enough. It needed an allen wrench on the one side, and I cranked down as hard as I could (it was loose anyway). The was it. I did not have any grinding or anything else, though.
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Pro
Joined: Sep 2001
Posts: 644
Likes: 0
From: Oklahoma City OK
Re: Clunking in Rearend (John Wiz)
That could be my problem. When I installed my Coras, I started to loosen the sway bar and found I did not have the proper tools so I ended up cutting the stock pipes off.
Thanks
Tod
Thanks
Tod
Thread Starter
Safety Car
Joined: May 2002
Posts: 4,485
Likes: 0
From: Austin Texas
Re: Clunking in Rearend (John Wiz)
the dealer couldn't get it in today.......i'm printing everybody's suggestions/comments etc so they can have a headstart. thanks for the input. i'll let you know the outcome. jc
