PerformanceTrucks.net Forums

Notices
GMT 900 Trucks General Discussion 2007 - 2013 Trucks | General Discussion

Question about Cats on my 2010 Sierra

Thread Tools
 
Search this Thread
 
Old 12-10-2010, 04:00 PM
  #1  
TECH Enthusiast
Thread Starter
iTrader: (9)
 
Join Date: Nov 2002
Location: Pearland Tx
Posts: 617
Likes: 0
Received 0 Likes on 0 Posts
Default Question about Cats on my 2010 Sierra
The Third catalytic convertor on my truck, whats its function ? Is it even a catalytic convertor or possibly a resonator ? Just curious cause my truck is a bit on the quite side and its going to be awhile before I put headers on it (Or if I even do that considering a 2011 CC 6.2L).
JetBlack98Z is offline  
Reply Like
Old 12-11-2010, 08:03 AM
  #2  
TECH Veteran
iTrader: (5)
 
BLACKND's Avatar
 
Join Date: Aug 2004
Location: Alvin,TX
Posts: 4,123
Likes: 0
Received 0 Likes on 0 Posts
Default
Been wondering about this also. I don't have a 2009 + so I haven't looked at it other than thru pictures, but it doesn't appear to have 02's forward or aft of the third cat. I was under the impression that its just a resonator and could be removed, but would like to know for sure for the future.
BLACKND is offline  
Reply Like
Old 12-11-2010, 08:48 AM
  #3  
TECH Veteran
iTrader: (36)
 
Join Date: Oct 2004
Location: somewhere in TX
Posts: 4,949
Likes: 0
Received 29 Likes on 24 Posts
Default
It;s a third cat but it's not monitored
01WS6/tamu is offline  
Reply Like
Old 12-13-2010, 12:25 PM
  #4  
TECH Enthusiast
iTrader: (10)
 
carbongmc's Avatar
 
Join Date: Oct 2010
Location: Gonzales, La.
Posts: 515
Likes: 0
Received 1 Like on 1 Post
Default
I cut mine off. It felt "a little" better in mid-range rpms, and also made it a tad bit louder. But not enough to make me not want to do it again.
carbongmc is offline  
Reply Like
Old 12-13-2010, 12:29 PM
  #5  
TECH Enthusiast
iTrader: (1)
 
blackjack325's Avatar
 
Join Date: Jul 2009
Location: RGV, TX
Posts: 692
Likes: 0
Received 0 Likes on 0 Posts
Default
a THIRD cat?! in line or overall? anyone have pics of what it looks like on your 2010/2011 after the exhaust manifold?
blackjack325 is offline  
Reply Like
Old 12-13-2010, 12:41 PM
  #6  
TECH Enthusiast
Thread Starter
iTrader: (9)
 
Join Date: Nov 2002
Location: Pearland Tx
Posts: 617
Likes: 0
Received 0 Likes on 0 Posts
Default
Originally Posted by blackjack325
a THIRD cat?! in line or overall? anyone have pics of what it looks like on your 2010/2011 after the exhaust manifold?
I'll try and crawl my happy *** under the truck after lunch and snap a pic for you.
JetBlack98Z is offline  
Reply Like
Old 12-13-2010, 01:02 PM
  #7  
TECH Enthusiast
Thread Starter
iTrader: (9)
 
Join Date: Nov 2002
Location: Pearland Tx
Posts: 617
Likes: 0
Received 0 Likes on 0 Posts
Default
Since im going to be busy after lunch here is Skipperdaddy's post about the "Third Cat"
https://www.performancetrucks.net/fo...d.php?t=436526
JetBlack98Z is offline  
Reply Like

Trending Topics

Old 12-13-2010, 02:24 PM
  #8  
TECH Enthusiast
iTrader: (1)
 
blackjack325's Avatar
 
Join Date: Jul 2009
Location: RGV, TX
Posts: 692
Likes: 0
Received 0 Likes on 0 Posts
Default
oh I see.... its after the Y right?

WTF!? cut that ***** off!! and the other 2 while youre at it!
blackjack325 is offline  
Reply Like
Old 12-13-2010, 03:23 PM
  #9  
TECH Resident
iTrader: (7)
 
skipperdaddy's Avatar
 
Join Date: Jul 2008
Location: Gonzales, LA
Posts: 783
Likes: 0
Received 0 Likes on 0 Posts
Default
yep yep... gutted mine less than a week after i got it...LOL
skipperdaddy is offline  
Reply Like
Old 12-13-2010, 03:44 PM
  #10  
14 Second Truck Club
iTrader: (15)
 
double047's Avatar
 
Join Date: Jul 2010
Location: Texas
Posts: 1,629
Likes: 0
Received 0 Likes on 0 Posts
Default
Yeah that's some BS, all 3 of mine found the dumpster.
double047 is offline  
Reply Like



Advanced Search
Quick Reply: Question about Cats on my 2010 Sierra


Reply Closed Thread Share

All times are GMT -5. The time now is 12:38 PM.