Exhaust System Ping/Crackle/Snap Noise During Cool Down (Replace Exhaust System Rearward of Catalytic Convertor)
| Subject: | Exhaust System Ping/Crackle/Snap Noise During Cool Down (Replace Exhaust System Rearward of Catalytic Convertor) |
| Models: | 2000-02 Buick Century |
| 2000-02 Pontiac Grand Prix |
| with 3.1L V6 Engine (VIN J, RPO LG8) |
Condition
Some owners may comment on a ping/crackle/snap type noise that is audible for a short period of time after the engine is turned off. Typically, this noise is most apparent when the vehicle is being parked in a garage and may be detected from either the passenger compartment or from outside the vehicle.
Cause
This condition may be caused by the thermal related contraction/expansion of the resonator internal layers.
Correction
Replace the existing exhaust system muffler assembly, which includes the resonator, exhaust and tail pipes, with the applicable new assembly and a new catalytic converter gasket indicated below in Parts Information by vehicle model. To ensure correct installation, follow the applicable procedure contained in SI2000 as indicated in the chart below.
Model/Year | Document ID Number |
|---|---|
Buick Century/2000 | 586174 |
Buick Century/2001-02 | 676680 |
Pontiac Grand Prix/2000 | 583441 |
Pontiac Grand Prix/2001-02 | 685794 |
Parts Information
Part Number | Description |
|---|---|
10323005 | Muffler, Exhaust (Buick Century) |
10323004 | Muffler, Exhaust (Pontiac Grand Prix) |
10275205 | Gasket, Catalytic Converter |
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
L2584 | Muffler -- Replace | 0.3hr |
