One problem related to manifold/header/muffler/tail pipe has been reported for the 2002 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 GMC Yukon based on all problems reported for the 2002 Yukon.
Broken exhaust manifold studs are causing environmental hazard and may lead to failed catalytic converter and other engine problems. This is a manufacturing defect that should be recalled, as it renders the vehicle either unusable or unable to pass environmental testing.