Rattle/Buzz Type Noise From Under Engine Compartment During Acceleration/Deceleration (Replace Catalytic Converter Bracket Assembly)
| Subject: | Rattle/Buzz Type Noise From Under Engine Compartment During Acceleration/Deceleration (Replace Catalytic Converter Bracket Assembly) |
| Models: | 2003-2004 Cadillac CTS with 3.2L Engine (VIN N -- RPO LA3) |
| Built Prior To VIN Breakpoint 40159439 |
Condition
Some customers may comment on a rattle/buzz type noise coming from under the engine compartment whenever the vehicle accelerates or decelerates.
Cause
This rattle/buzz type noise may be due to the breaking/cracking of the catalytic converter support bracket at the transmission case attachment points.
Correction
An improved bracket assembly is now available from GMSPO.
Replace the existing catalytic converter bracket assembly with P/N 15143600. Refer to Catalytic Converter Hanger Bracket Replacement in the Engine Exhaust sub-section of the Service Manual or SI document #783476.
Parts Information
Part Number | Description |
|---|---|
15143600 | Catalytic Converter Bracket Asm |
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
L9702* | Catalytic Converter Bracket -- Replace | 0.4 hr |
*This is a unique labor operation to be used only with this bulletin. | ||
