January 14, 2005hey,
has anyone had exhaust noise or resonance near the front under you feet??? my '03 started today. at certain rpms the sound gets fairly loud and the floorboard vibrates. also the engine makes a strange sound when it starts and stops...
i took it to the dealer and they checked it out for 2.5 hours.
finally they called the gm tech center as was given reference to a november 24, 2004 tsb. this tsb says that the exhaust "doughnut" / seal between the manifold and pipe needs replaced. since this was the first time for my dealer, they didnt have the parts in stock.
anyone else heard of this on the tb???