Service bulletin SS704-WST2021
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10202738 |
| Published by NHTSA | 2021-11-03 |
| Manufacturer's number | SS704-WST2021 |
| Manufacturer's date | 2021-10-20 |
| NHTSA component | ELECTRICAL SYSTEM |
NHTSA's summary
ECP (Electronic Controlled Pneumatics) Ground Noise/False Codes. Internal board of ECP supplied by manufacturer. Audible chirping noise through speakers, leaking air through ECP, continual error codes with no problem found.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Electrical system
| WESTERN STAR 49X | 2021 to 2022 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.