Service bulletin 20NA177
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 | 10183194 |
| Published by NHTSA | 2020-11-30 |
| Manufacturer's number | 20NA177 |
| Manufacturer's date | 2020-10-23 |
| NHTSA component | SUSPENSION; SUSPENSION:REAR:SPRINGS:AIR SUSPENSION SYSTEM:SPRINGS/BAGS |
NHTSA's summary
This technical bulletin provides repair information to correct a customer concern of the loss of air pressure causing rear air suspension bags not to inflate.
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
Suspension, Air suspension
| CHEVROLET 6500 | 2019 |
|---|---|
| CHEVROLET SILVERADO 4500 | 2019, 2020 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 5500 | 2020 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 6500 | 2019 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET duplicate SILVERADO 5500 | 2019 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| N222365910 | 2023-06-27. Service bulletin. Customer Satisfaction Program. Certain vehicles, equipped with Valve-Air Suspension Air Release (RPO JPZ), were incorrectly invoiced with an Air Suspension Dump Valve and may have been built with the incorrect switch assembly. Dealers will issue a reimbursement check in the amount of $60 USD, replace the switch assembly, and disable the Air Suspension Dump Valve switch and Low Pressure indicator. |
|---|