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Old 03-07-2014, 11:40 AM   #15
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2010 30' Classic
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South of the river , Minnesota
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Broken exhaust manifold studs are a common problem on any engine. I've had a couple of them replaced on my pickup, and fixed some on an old 1968 tandem-axle dump truck, and on tractors. Also happens on sedans. Not unique to GM by any means.

It is rare that the head has to be removed for such repairs, though it does happen.
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Old 03-07-2014, 12:23 PM   #16
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1981 31' Excella II
New Market , Alabama
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Did they replace all of the studs/bolts? If they put the old ones back in you will be in the same boat soon. Also stainless steel bolts won't break like steel ones will.

Perry

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Originally Posted by SStar View Post
I got my Yukon back from the dealer yesterday, everything looks good, I checked the right side and all was intact. and The repair to the left side was more extensive than was first thought. The head was removed and sent to a machine shop to extract the broken bolt. The exhaust manifold, heat shield, manifold gaskets, head and valve cover gaskets were replaced. Several hours labor was incurred. I was lucky, my deductible on the warranty was $100.00, the dealer is working with the warranty company for the balance. I was highly impressed with the way that the dealer handled the situation.
After talking with the dealer and several independent mechanics, I would highly recommend checking your vehicles, especially the V8 GMs for broken manifold bolts on a regular basis. If you catch it early it might be a simple repair to extract and replace the bolt before it develops into an exhaust leak.
If you have a vehicle that is going out of warranty soon it would be advisable to give it a good look over for any problems that need attention.
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Old 03-07-2014, 04:26 PM   #17
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All new bolts on the left side, nothing done to the right. I may try to change the right side bolts next winter when I have some down time.
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