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. Replace the faulty muffler or resonator. Refer to Muffler 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, or muffler. Refer to one of the following procedures: Catalytic Converter Replacement (4.2L Engine) Catalytic Converter Replacement (5.3L Engine) Muffler Replacement |
| CAUTION |
|---|
| While engine is operating, the exhaust system will become extremely hot. To prevent burns avoid contacting a hot exhaust system. |
Exhaust Noise