Ehaust Manifold Bolts

[beetle]

Hi, I just learned that GM has had a problem with the exhaust manifold bolts breaking off on Vortec V8's. After viewing and looking at images of the problem, I looked at mine and they looked fine. It is a California 4.8L with 86,000 miles and babied since new. Now, I did notice that the images posted are from vehicles located in parts of the country where there is snow, heat, road salts, ect. and there was quite a bit of rust and corrosion on the bolts and manifolds. Does anyone here think that could be the cause instead of defective parts? Anyone else have this problem? Thanks

[jtramsey]

I had the heads pop off my exhaust manifold on a 1999 K2500 4x4 with the 6.0.It was out of warranty so I just fixed it my self.

[beetle]

I had the heads pop off my exhaust manifold on a 1999 K2500 4x4 with the 6.0.It was out of warranty so I just fixed it my self.

 

Were you able to repair w/o removing the heads?

[2000DV4.8]

I had the heads pop off my exhaust manifold on a 1999 K2500 4x4 with the 6.0.It was out of warranty so I just fixed it my self.

 

Were you able to repair w/o removing the heads?

 

If you're lucky, it'll break in a way that when you pull the manifold off, enough of the bolt will be sticking out of the head to grab with a pair of vice grips (that's what happened on my old 4.8).

[jtramsey]

Yes That is how it went.Dealer wanted 750.00 to replace them.Did it in half a day.parts 50.00.

[Wingnut]

Hi, I just learned that GM has had a problem with the exhaust manifold bolts breaking off on Vortec V8's. After viewing and looking at images of the problem, I looked at mine and they looked fine. It is a California 4.8L with 86,000 miles and babied since new. Now, I did notice that the images posted are from vehicles located in parts of the country where there is snow, heat, road salts, ect. and there was quite a bit of rust and corrosion on the bolts and manifolds. Does anyone here think that could be the cause instead of defective parts? Anyone else have this problem? Thanks

 

GM generally doesn't have a problem with this. A few people might, but if it were actually an issue, this forum would be inundated with complaints about it.