Service bulletin CB23-J-003
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 | 10244947 |
| Published by NHTSA | 2023-11-06 |
| Manufacturer's number | CB23-J-003 |
| Manufacturer's date | 2023-10-27 |
| NHTSA component | ENGINE AND ENGINE COOLING |
NHTSA's summary
CUSTOMER SATISFACTION CAMPAIGN: In some 2022-2023 MY Isuzu F-Series trucks equipped with RPO 5U5 Tire Size 255/70R22.5, a calibration error caused the affected vehicles to be built with an incorrect tire size value. As a result, the speedometer will show a vehicle speed higher than the actual vehicle speed while driving and the odometer will accumulate miles faster (approximately 14% faster) than the “actual” or “True” vehicle miles. Additionally, mileage data collected and stored in the Mimamori Unit (MMU) will be incorrect.
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
Engine
| ISUZU F-SERIES | 2022 to 2023 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.