Three problems related to manifold/header/muffler/tail pipe have been reported for the 1998 Chevrolet Tahoe. The most recently reported issues are listed below.
Engine leaked coolant from the intake manifold gasket. As a result, engine blew out, causing the vehicle to malfunction. Consumer was driving when coolant began leaking. Gm has a new part number because the previous gasket has been changed to correct deffect. Mechanic replaced intake manifold gasket set and serpentine belt.
Muffler.
Exhaust pipe brace failed.