Three problems related to manifold/header/muffler/tail pipe have been reported for the 2003 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 GMC Yukon based on all problems reported for the 2003 Yukon.
Found a broken off exhaust manifold bolt on driveway 3 years ago. Found another broken one today. Both are from the same side. Now instead of 6 bolts I have 4 bolts. This is causing an exhaust leak, engine light and emissions problems that harm the environment. . Read more...
Purchased 2003 Yukon xl failed state inspection because of broken manifold exhaust bolts caused leaking manifold gasket. Emission and possible fire potential due to leaking manifold. Repair cost estimated in access of $1,700.
I have a 2003 GMC Yukon SUV with a 5300 engine. The idle is very rough. The dealer says "its the nature of the beast". I also have a 2003 GMC Yukon xl, with the same engine and it does not do this. Are they shirking their responsibilities?.