Chatter Sound Under Load - Pontiac G8 Forum: G8 Forums - G8Board.com
Tech Lounge First Mods / Basic Tech Questions

 1Likes
  • 1 Post By
 
LinkBack Thread Tools
post #1 of 5 (permalink) Old 07-29-2018, 02:01 PM Thread Starter
Junior Member
 
BD380's Avatar
 
Join Date: Jul 2009
Location: Northern VA
Posts: 21
Garage
Question Chatter Sound Under Load

My 23k-mile 2009 G8 GT is making a strange chatter/rattle sound. It doesn't sound like it's coming from the engine bay; rather, it sounds like it's coming from underneath the rear of the vehicle. Rear differential maybe?

Here's a video of the sound:

UPDATE: The sound is also present when the vehicle is in park, not just under load. New videos below:



Any ideas?

Last edited by BD380; 07-29-2018 at 02:38 PM. Reason: more videos
BD380 is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 07-29-2018, 04:48 PM
Senior Member
 
ebg8gt's Avatar
 
Join Date: Jan 2017
Location: Mount Airy, MD
Posts: 566
Loose exhaust?

2009 PBM GT
Under the Knife Again
Wiseco Pistons, K1 Rods, Johnson Lifters, BLP Keep Hatin' PDS Cam, Roto-Fab, BLP Ported Intake and Throttle Body, Kooks 1-7/8 long tubes, XForce Varex Catback, ZL1 Converter, Camaro Trans Pan/Filter, GXP Brembos
Breyton GTS-AV Wheels, 6k HIDs, Holden Steering Wheel and Paddle Shifters, Eibach Springs, 35% Tint
Tuned by Day Tuning
ebg8gt is offline  
post #3 of 5 (permalink) Old 07-29-2018, 05:04 PM
Senior Member
 
PONY MAN's Avatar
 
Join Date: Mar 2010
Location: EARTH :-/
Posts: 4,354
Don't think it's the rear differential since the rattle is occurring while the vehicle is stationary i.e.parked and the driveshaft nor the gears in the differential are spinning. Would check the heat-shield(s) for tightness i.e. snug bolts. Also, try pushing up on the mufflers or other parts of the exhaust to see if the rattle lessens or goes away. Good luck.

#NEVER GIVE UP
#AUDACITY OF HOPE

"Rather not run the risk of offending anyone, so let me just go ahead and offend someone". -PONY MAN

"When you write the story of your life, don't let anyone else hold the pen". -UNKNOWN














PONY MAN is offline  
 
post #4 of 5 (permalink) Old 07-29-2018, 06:38 PM Thread Starter
Junior Member
 
BD380's Avatar
 
Join Date: Jul 2009
Location: Northern VA
Posts: 21
Garage
Thumbs up

Thanks for the advice, looks like I found the issue!

BD380 is offline  
post #5 of 5 (permalink) Old 07-29-2018, 07:32 PM
Member
 
$omeoldguysG8's Avatar
 
Join Date: Aug 2017
Posts: 73
Man, I hate when people come up behind my car and start hitting the exhaust with the palm of their hand, it makes me think the differential or something is going!
BD380 likes this.

[SIGPIC][/SIGPIC]
04 GP GT2 Bone stock, just like me!
09 PBM G8 GT, Spectre CAI ...more smiles per gallon!
$omeoldguysG8 is offline  
Sponsored Links
Advertisement
 
Reply

Tags
chatter , clatter , noise , rattle , sound

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Pontiac G8 Forum: G8 Forums - G8Board.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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