Exhaust flange leaks
Thread Starter
Intermediate
Joined: Jun 2003
Posts: 49
Likes: 0
From: CA
Exhaust flange leaks
I recently had my 99 coupe serviced and got it back with an exhaust flange leak between the muffler flange and exhaust pipe flange. Seem the exhaust pipe that was welded onto the flange was defective in the welding and completely came apart. Currently, waiting for the dealer to let me know if this is under warranty since I feel it's a defective part. Anyone have any similiar problems?
Instructor
Joined: Jun 2003
Posts: 119
Likes: 0
From: Boalsburg PA
Re: Exhaust flange leaks (dss)
I had the exact same problem on my 99 at 34000 mi. Remind your dealer that this (the "H" pipe assembly) is part of the emissions system (includes the catalytic converters), and your 8 yr emissions warranty should cover it. Be firm, the new part costs about $1,200. If they won't cover it, take it to a good welding shop and have it rewelded. Good luck.
Burning Brakes
Joined: Jul 2003
Posts: 1,104
Likes: 0
From: "In a van down by the river" CO
Re: Exhaust flange leaks (OC1Dave)
This has been a reoccurring theme around here as our cars get more miles on them. Make friends with your service guy. If that does not get your parts replaced, beat him up and take his girl friend.
Seroiusly, a muffler shop can easily weld the flange back on at little to no cause if all else fails.
Seroiusly, a muffler shop can easily weld the flange back on at little to no cause if all else fails.
Racer
Joined: Dec 2001
Posts: 313
Likes: 0
From: Long Island NY
Re: Exhaust flange leaks (lowdowndirty)
This just happened to my 99 Coupe with 59,000 miles. I currently have the extended warranty and while making my appointment the service rep said it may not be covered. Please let me know how it goes for you.
Thread Starter
Intermediate
Joined: Jun 2003
Posts: 49
Likes: 0
From: CA
Re: Exhaust flange leaks (knesbitt)
Well I got bad news from my dealer Bob Stall Chev in La Mesa, Ca.
They said my extended warranty does not cover my exhaust problem and referred me to the GM rep who said it was only a $30 fix and that they couldn't help. Funny thing when I went to have it fixed there was another Corvette from Bob Stall in the shop having the same problem, I really think this is a defective part in that the welds are not properly done and after some time eventually break apart. GM just doesn't want to admit they have a problem with the exhaust welds.
They said my extended warranty does not cover my exhaust problem and referred me to the GM rep who said it was only a $30 fix and that they couldn't help. Funny thing when I went to have it fixed there was another Corvette from Bob Stall in the shop having the same problem, I really think this is a defective part in that the welds are not properly done and after some time eventually break apart. GM just doesn't want to admit they have a problem with the exhaust welds.
Burning Brakes
Joined: Mar 2003
Posts: 915
Likes: 1
From: UK
Re: Exhaust flange leaks (dss)
I recently had my 99 coupe serviced and got it back with an exhaust flange leak between the muffler flange and exhaust pipe flange. Seem the exhaust pipe that was welded onto the flange was defective in the welding and completely came apart. Currently, waiting for the dealer to let me know if this is under warranty since I feel it's a defective part. Anyone have any similiar problems?
Cheers,
Ian.
:cheers:
Melting Slicks
Joined: Mar 1999
Posts: 3,326
Likes: 0
From: Taylor TX
NCM Sinkhole Donor
Re: Exhaust flange leaks (dss)
If the flange is on the muffler pipe side, the emission warranty doesn't cover it. You'd be better off going to a muffler shop and having them weld it. I had both mine welded for $50. Or replace with aftermarket exhaust.
If it's the H-pipe side, emission warranty should cover it. I think it's only 5yr/60k mile coverage though.
If it's the H-pipe side, emission warranty should cover it. I think it's only 5yr/60k mile coverage though.
Thread Starter
Intermediate
Joined: Jun 2003
Posts: 49
Likes: 0
From: CA
Re: Exhaust flange leaks (lotzahp)
The flange was on the H pipe side, not the muffler side. It was still not covered under warranty, but emissions coverage according to GM is for 80K miles. It cost me $65 for both flanges to be welded.
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Instructor
Joined: Jun 2003
Posts: 119
Likes: 0
From: Boalsburg PA
Re: Exhaust flange leaks (dss)
Page 18 - 1999 Corvette Warranty Book: "(**)8 years/80,000 miles, whichever comes first, Federal emission coverage."
Page 20: "Catalytic Converter* **"
Page 27: "Chevrolet Customer Assistance Center 1-800-222-1020"
No page or phone Number Listed: Chevrolet Zone Office
General Motors Headquarters
(Federal) Environmental Protection Agency
Page 20: "Catalytic Converter* **"
Page 27: "Chevrolet Customer Assistance Center 1-800-222-1020"
No page or phone Number Listed: Chevrolet Zone Office
General Motors Headquarters
(Federal) Environmental Protection Agency
Instructor
Joined: Jun 2003
Posts: 119
Likes: 0
From: Boalsburg PA
Re: Exhaust flange leaks (dss)
Sorry, I didn't notice you are from the peoples republic of California:
Page 18: " State of California Air Resources Board
P.O. Box 8001
El Monte, California 91731-2990"
Page 18: " State of California Air Resources Board
P.O. Box 8001
El Monte, California 91731-2990"
Burning Brakes
Joined: Apr 1999
Posts: 947
Likes: 1
From: Lake Worth. Fl.,USA Fl
Re: Exhaust flange leaks (dss)
Had the infamous leak as well..at the flange.. GM simply does not want to own up to this obvious manufacturer's defect. After 36 you are on your own.. I used JB weld with great succes. If it gets loose again it takes only 5 minutes to repair.
Burning Brakes
Joined: Nov 1999
Posts: 839
Likes: 140
From: Holiday Island AR
Re: Exhaust flange leaks (JCR)
Just replaced mine last Sunday at 40K miles. Passenger's side was completely broken, driver's side had crack. Dealer said it wasn't covered under the extended warranty. Fortunately a guy in the car club was selling his '03 stock exhaust for $75 so it was an easy decision.
:auto:
[Modified by TigerVette, 8:42 PM 9/17/2003]
:auto:
[Modified by TigerVette, 8:42 PM 9/17/2003]
Le Mans Master
Joined: Jan 2001
Posts: 6,449
Likes: 371
From: Maryville TN
St. Jude Donor '06-13,'16-'17, '19
Re: Exhaust flange leaks (dss)
GM has a defective weld that they refuse to admit. (surprise, surprise)
Here's a pic of the driver's side weld that came lose on my car.
As you can see, the weld did NOT break. It simply was a bad weld that did not stick to the flange. I wonder how many more bad welds we have on our cars?
Tom
Here's a pic of the driver's side weld that came lose on my car.
As you can see, the weld did NOT break. It simply was a bad weld that did not stick to the flange. I wonder how many more bad welds we have on our cars?
Tom
Melting Slicks
Joined: Aug 2002
Posts: 2,103
Likes: 0
From: Tacoma WA your Junk Yard Dogg
Re: Exhaust flange leaks (TigerVette)
kinda looks like some of my welds when i put on my stainless works headers:lolg: :lolg: :lolg: :lolg: :lolg: mine have lasted about a 1000 miles so far :lol:
