Exhaust Noise

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

Exhaust Noise

Condition	Action
CAUTION: While engine is operating, the exhaust system will become extremely hot. To prevent burns avoid contacting a hot exhaust system. DEFINITION: An audible or physical noise due to a faulty component or damaged components causing a loose or misaligned exhaust system resulting in a rattle or vibration noise - buzz, groan, hum.Refer to Symptoms - Engine Exhaust prior to beginning this table.
Popping or hissing noise	Exhaust leak - Refer to Exhaust Leakage .
Loud exhaust	Compare to a known good vehicle. Inspect for a damaged or failed muffler or resonator, if equipped. Replace the faulty muffler or resonator, if equipped. Refer to Exhaust System Replacement .
External rattle or vibration noise	Inspect for a bent or loose hanger, loose heat shield, or loose clamp. Inspect for a exhaust pipe causing interference. Repair or replace the affected component. Refer to the affected component's service procedure.
Internal rattle	Test the components by tapping with a rubber mallet to confirm a rattle. Replace the faulty catalytic converter, resonator, if equipped, or muffler. Refer to Exhaust System Replacement .