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Exhaust Noise

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
Exhaust Noise

Condition Action
CAUTION: Refer to Hot Exhaust System Caution in Cautions and Notices.
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, i.e. 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
  1. Compare to a known good vehicle.
  2. Inspect for a damaged or failed muffle.
  3. Replace the faulty muffler. Refer to Muffler Replacement .
External rattle or vibration noise
  1. Inspect for a bent or loose hanger, loose heat shield or loose clamp.
  2. Inspect for a exhaust pipe causing interference.
  3. Repair or replace the affected component. Refer to the affected component's service procedure.
Internal rattle
  1. Test the components by tapping with a rubber mallet to confirm a rattle.
  2. Replace the faulty catalytic converter or muffler. Refer to one of the following procedures:
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