Go Back   Truck Forums > Chevrolet/GMC Truck Forums > Chevy Silverado/ GMC Sierra Forum
Sign in using an external account
Register Forgot Password?
Search

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 02-18-2010, 06:04 PM
Junior Member
 
Join Date: Feb 2010
Location: Mass.
Posts: 6
Default sounds like an exhaust leak

my 2000 gmc sierra sounds like an exhaust but when im underneith the truck i cant hear anything but when im driving around i can hear it and it sounds pretty loud
could it be leaking from my manifolds?
This ad is not displayed to registered members.
Register your free account today and become a member on Truckforums!
Reply With Quote
  #2  
Old 02-20-2010, 05:25 AM
RUFFNECK4LYFE's Avatar
Toyota, Nissan, and Other Truck Forum Moderator
 
Join Date: May 2009
Location: West Texas
Posts: 1,845
Default

The best thing to do is have someone start it cold cold and get under to see if you feel it or hear it.
__________________
That way you'll Learn!!!!
Reply With Quote
  #3  
Old 02-23-2010, 10:03 PM
Junior Member
 
Join Date: Feb 2010
Location: Mass.
Posts: 6
Default

ive done that with the remote start and i can hear it but i just cant locate the leak
and my service engine soon light came on and the code said low efficency catilist system bank 2
could this be from the exhaust leak or do i need new cats?
Reply With Quote
  #4  
Old 02-24-2010, 08:10 AM
RUFFNECK4LYFE's Avatar
Toyota, Nissan, and Other Truck Forum Moderator
 
Join Date: May 2009
Location: West Texas
Posts: 1,845
Default

Ohhhh well it could be a bad down stream O2 sensor or one or both of the cats is bad and clogging up. If its clogging up then it will sound like its leaking exhaust somewhere. While its running does the exhaust stink real bad?? Go to the tailpipe and have someone rev on it and it may sound like its clogged up.
__________________
That way you'll Learn!!!!
Reply With Quote
  #5  
Old 02-24-2010, 10:17 PM
Junior Member
 
Join Date: Feb 2010
Location: Mass.
Posts: 6
Default

what kind of noise should i be looking for when i do this to tell if its clogged?
Reply With Quote
Old 02-24-2010, 10:17 PM
 
 
 
Reply



Tags
2000, 350, avalanche, chevrolet, chevy, cold, exhaust, ford, frontier, leak, nissan, noise, s10, silverado, truck

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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


Advertising

Featured Sponsors
Vendor Directory

Our Sponsors
Advertising
All times are GMT -5. The time now is 04:28 AM.

Internet Brands, Inc.



SEO by vBSEO ©2010, Crawlability, Inc.