Exhaust Noise

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.

Exhaust Noise

Condition	Action
CAUTION: Refer to Exhaust Service Caution in Cautions and Notices. IMPORTANT: Refer to Symptoms - Engine Exhaust prior to beginning this table. 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.
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 pipe. Replace the faulty muffler or pipe. Refer to one of the following procedures: Muffler Replacement (LV6 Engine) or Muffler Replacement (LNK Engine) Front Pipe 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 or muffler. Refer to one of the following procedures: Catalytic Converter Replacement (LV6 Engine) or Catalytic Converter Replacement (LNK Engine) Muffler Replacement (LV6 Engine) or Muffler Replacement (LNK Engine)