Rear End Clunk - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
Suspension/Wheels/Brakes/Tires Talk about Chevy Cobalt Suspension, Brakes, Wheels, and Tires here
Sponsored by:

 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 11-27-2013, 10:10 AM Thread Starter
Newcomer
 
Join Date: Jul 2013
Posts: 8
Rear End Clunk

My son has a 2006 LS 4door with 90k miles. When we bought it, we had a clunking in the rear when going over bumps.
We replaced the rear shocks, checked the spare tire hold down and even replaced the tires.
Exhaust system was and ss all tight.
It seemed like it got better, but he just came home from college and I drove it and it seemed as bad as it had been before all of the work we did.
What is the most common problem of a loud clunking in the rear end when you go over bumps.
glava2876 is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 11-27-2013, 11:18 AM
Super Moderator
YourCobalt.com Premium Member


 
Coby7's Avatar
 
Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Posts: 11,820
Garage
The most common is broken springs, second most common is shock bolts coming loose because they weren't torqued properly.

Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716

Never drive faster than your guardian angel can fly
Coby7 is offline  
post #3 of 5 (permalink) Old 11-27-2013, 11:27 AM Thread Starter
Newcomer
 
Join Date: Jul 2013
Posts: 8
Quote:
Originally Posted by Coby7 View Post
The most common is broken springs, second most common is shock bolts coming loose because they weren't torqued properly.
Thanks Coby7. It was the shock bolt, but it was because when I torqued it the lower one had enough rust that even after PB Blaster it must have been binding.
I tightened it more and that was it!
glava2876 is offline  
 
post #4 of 5 (permalink) Old 11-27-2013, 11:44 AM
Super Moderator
YourCobalt.com Premium Member


 
Coby7's Avatar
 
Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Posts: 11,820
Garage
Tighten

• Tighten the upper bolt to 90 Nm (66 lb ft).

• Tighten the lower bolt to 110 Nm (81 lb ft).

---------- Post added at 03:44 PM ---------- Previous post was at 03:42 PM ----------

Don't ask me why the top bolts is torque at less force than the bottom. Makes no sense to me but that's right out of the GM server service manual.

Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716

Never drive faster than your guardian angel can fly
Coby7 is offline  
post #5 of 5 (permalink) Old 11-27-2013, 11:56 AM Thread Starter
Newcomer
 
Join Date: Jul 2013
Posts: 8
Quote:
Originally Posted by Coby7 View Post
Tighten

Tighten the upper bolt to 90 Nm (66 lb ft).

Tighten the lower bolt to 110 Nm (81 lb ft).

---------- Post added at 03:44 PM ---------- Previous post was at 03:42 PM ----------

Don't ask me why the top bolts is torque at less force than the bottom. Makes no sense to me but that's right out of the GM server service manual.
Thanks again!
glava2876 is offline  
Sponsored Links
Advertisement
 
Closed Thread

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome