Manifold/header/muffler/tail Pipe problems of the 2005 GMC Sierra 1500

Exhaust manifold bolts on each side of engin snapped off for no appearant reason / normal use, big concern of exaust fumes entering the cab.

Recently purchased a 05 GMC Sierra 1500 hd with 6. 0 vortec engine. It has a noticeable ticking and after checking my exhaust manifold bolts I found that four are broken and allowing raw exhaust fumes into the air. With the bolts breaking the manifold is warped and broken. This is all at 94,000 miles.

Complaint on gm exhaust manifold bolt defect, inferior brake/ fuel lines. Mine is a 2005 GMC. Defective exhaust bolts affect 12 million gm trucks from 1999 to 2007. Gm exhaust bolts are to small brittle for securing exhaust manifolds. Bolts snap off causing exhaust leaks. Trucks not passing emissions and dangerous exhaust fumes entering the drivers compartment of the vehicles while driving. I and my family get a carbon monoxide headache when I drive it and have had to pull over to the side of the road feeling like I was going to pass out, open windows and sit until I felt better. I have also had problems getting my truck to pass emissions due to the leaks and the leaks are causing the vehicles to be none epa compliant because of O2 sensor errors resulting in failed emission test. Also brake and fuel lines are not suitable for northern states causing brake failure with out warning, fuel lines are all rusted and swelled in danger of bursting causing fire without warning. Ford and other vehicles I have worked on use stainless fuel lines and look like new for life of vehicle. I have also seen other manufacturers use powder coated brake lines on the entire vehicle and 20 year old vehilces show no rust problems. My 2005 GMC from the rear end brake hose to the wheel cylinders they used powder coated brake lines. Those lines look like new yet. Gm knew the powder coated lines were better why did they use faulty galvanized steel on the rest of the truck? as it is now my truck can't be operated on the road without $3000 in repairs due to gm using poor quality parts. The truck has had these problems for over 5 years now and only has 138,000 miles. Trucks like this in southern states have over 250,000 miles, lines still good. Recall needs to be done. . Read more...

I found 2 broken exhaust manifold bolts on my 2005 sierra (70, 717 miles), 1 on each side, 1 was actually missing & the other was just hanging there, I then went to check my wife's vehicle, a 2003 chevy tahoe ( 90,420 miles) & that also has 2 missing , 1 from either side, you cant imagine how sick I am at this point, both our vehicles are in need of major repairs, please tell me that general motors will need to recall these vehicles & make the needed repairs, sick to my stomach & cash strapped, [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).