2006 Hummer H2 Engine problems

Exhaust leaking because manifold bolts broken , this is my second hummer , my lawyer has a hummer also and I belong to hummer group here in florida

Exhaust bolts broken , leaking exhaust fumes into vehicle , engine fire ???? City driving

Check engine light came on and wouldn't go out. Took it to the garage and they pulled up the code po442, evap leak. They did a smoke test and found out the fuel pump unit was all rusted out and also the straps holding the fuel tank in was all rusted out. One of the straps was completely broken off and only one was holding the tank but it was all rusted. Called a dealer because this part should have an 80,000 mile warranty but they said it was under powertrain and it wouldn't be covered. How could this be powertrain when it was an emissions issue. This is a very unsafe issue. It probably could of caught on fire. The vehicle is only a 2006 with 65000 miles on it so how could this happen. *Tr

1. Normal driving in town and highway 2. Failure of the drivers side & passenger side exhaust manifold bolts; causes exhaust gases to fill engine compartment and bypasses the catalytic emissions equipment. 3. Drivers side head had to be removed, broken manifold bolts extracted from the head, new manifold and stronger manifold bolts installed. *Tr

2006 Hummer h2 sut 6.0 Liter engine exhaust manifold bolts broken off. *Kb

1. Normal driving in town and highway 2. Failure of the drivers side exhaust manifold bolts; causes exhaust gases to fill engine compartment and bypasses the catalytic emissions equipment. *Tr 3. Drivers side head had to be removed, broken manifold bolts extracted from the head, new manifold and stronger manifold bolts installed. *Tr

The air filter covers on my h2 get hot and start deforming "ripples" in the plastic. The plastic molding between them where the wipers go through deforming also. I have replaced 4 air filter covers in under 6,000 miles. And 1 wiper molding. I am not sure of the consequences. Hummer says it's no problem. I have 1 of the air filter covers that has failed in my possession. According to gm/hummer there is no problem. They will just keep replacing them. *Tr