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Suspected Drive Train Noise ;help

L

LROverdeer

Guest
My wife recently purchased a used 2000 coupe still under warranty. After driving it a while, she noticed a noise coming from the rear under braking. :confused I drove the car (she let me!) and recreated a low rumbling noise (similar to grinding but different) under braking. I took the automatic transmission out of gear while braking and the noise was NOT evident, so I suspected that there was a problem in the drive train. :(

My wife took the car to a dealer for service and had them observe the noise and try to correct it. They replaced the alternator drive gear (I believe that's in the front, not the rear!) and eventually replaced the left muffler (??? and why not the right side if that was going to be the cause?), but the noise remained as loud as ever. :cry A Chevrolet engineer (don't know if he was C5 specialist) was at the dealership at the time and drove the car. He heard the noise but said that nothing could be done! :hb

They told my wife to call a Customer Service number. She did and got the expected runaround - they said they couldn't do anything and it would be up to the dealer to proceeed! :argue My wife is not going to leave this problem alone while the car is under warranty. When we take it to another dealer for service, what other areas should we have them look at? Universal joints? Transmission fluid? Alignment/tires? I'd appreciate any other suggestions anyone can provide. :BOW


Husband of an irate C5 owner :love
 

c4c5specialist

Technical Advisor
Joined
May 29, 2001
Messages
3,682
Location
New Haven, Ct. USA
Corvette
Nope, but someday.
Questions please

Hi there,
Ok, first, you state that the noise is NOT there when you are out of gear?????
Please check to see if you can duplicate the noise in every gear, 1,2,3,4, R.
Also, does the noise happen cold or hot??? Does temperature or driving time of the vehicle matter????
Is the noise there only when turning, or only when straight, or all the time?????
Does the noise change when you slightly pull up the e brake handle one or 3 clicks?????
Please answer these questions, and we can continue.
Welcome to the CAC, c4c5:hb
 
W

white02

Guest
Trans Noise

I don't know if this helps, but the video that came with my 2002 mentions a drivetrain noise that you will hear every now and then. It says it is completely normal and is a consequence of the drivetrain design, i.e. the tunnel that runs along the middle of the car. Don't know if that is what you are hearing or not, the audio on the video reproduces the sound so you should check with your dealership and hear that sound and see.
 

poorboys831

Well-known member
Joined
Nov 1, 2001
Messages
146
Location
charleston,s.c.usa
Corvette
1993 ruby red coupe
rear noise-i know this sounds too easy but i have a similiar sound from the rear when i'm in gear and while i'm at a stop and start to let my foot off the brakes to ease forward to see around something but still keeping my foot on the brake-just brake grab?almost like a low groan or creaking---- good luck----
 

danl72

Well-known member
Joined
Aug 24, 2001
Messages
678
Location
Chatsworth, CA
Corvette
2008 C6 Coupe
Have to say I have not heard this problem. Then again maybe it is because of the loud sqealing noise coming from the engine compartment. It sounds like the belt. Do I need to change the belt?
 
C

CorvetteWave

Guest
LR, I too have a 2000 Coupe. I had my exhaust switched to Corsa Indy's and shortly started hearing the noise you described. I would guess that the exaust bracket is get vibrations and causing the noise.
However, as was mentioned above, test to make triple-sure that you do not have a transmission problem.
 

Smolan

Member
Joined
Jun 13, 2007
Messages
8
Location
CA
Corvette
1998 Convertible Torch Red
Bearing noise

Have you figured out the noise? I have a 1998 w/ 40K that I just purchased that is making a similar noise. Only in gear and during acceleration. the faster I go the louser it gets. Not the brakes, sounds like a loud wheel bearing, but is not that. Seems that it may be drive shaft area?? Any help would be appreciated.
My wife recently purchased a used 2000 coupe still under warranty. After driving it a while, she noticed a noise coming from the rear under braking. :confused I drove the car (she let me!) and recreated a low rumbling noise (similar to grinding but different) under braking. I took the automatic transmission out of gear while braking and the noise was NOT evident, so I suspected that there was a problem in the drive train. :(

My wife took the car to a dealer for service and had them observe the noise and try to correct it. They replaced the alternator drive gear (I believe that's in the front, not the rear!) and eventually replaced the left muffler (??? and why not the right side if that was going to be the cause?), but the noise remained as loud as ever. :cry A Chevrolet engineer (don't know if he was C5 specialist) was at the dealership at the time and drove the car. He heard the noise but said that nothing could be done! :hb

They told my wife to call a Customer Service number. She did and got the expected runaround - they said they couldn't do anything and it would be up to the dealer to proceeed! :argue My wife is not going to leave this problem alone while the car is under warranty. When we take it to another dealer for service, what other areas should we have them look at? Universal joints? Transmission fluid? Alignment/tires? I'd appreciate any other suggestions anyone can provide. :BOW


Husband of an irate C5 owner :love
 
Joined
Jan 19, 2003
Messages
3,021
Location
5,800 feet above sea level
Corvette
2006 'Evil Stealth Black' Roadster
I would hope he has... the last post in this thread before yours is five years old!
:)

-Patrick
 
D

Dr C5 Corvette

Guest
Take it to a Exhaust specialist, and let them look at your exhaust or muffler for rubbing. It may be rubbing or shifting under braking could be a bracket broke or loose.....Dr C5 Corvette
Ps: Just My .02 cents
 

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