Broken exhaust manifold bolts on an LS engine. My 02 Suburban had 2 broken bolts on the LH side and next week I was going to fix them. Well I went out to take a look as the exhaust tick was getting louder and today I see 4 broken on the LH side and now 2 on the RH side so it looks like I may have to replace them all. I am going to attempt do do the weld a nut to them as the bolt heads are just breaking off leaving the stud there. Good news is if I need to take the manifolds off I will just buts them all off then heat'em then twist them off. You can bet I will be getting a lot better bolt in there.