# Service bulletin 23KWE

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: 10241497
- Published by NHTSA: 2023\-09\-01
- Manufacturer's number: 23KWE
- Manufacturer's date: 2023\-08\-22
- NHTSA component: POWER TRAIN

## NHTSA's summary

Safety Recall: Parts and repair procedures are now available. Kenworth has determined that a safety defect exists in certain Model Year 2023\-2024 T280, T380, and T480 chassis with TX\-8 transmissions and flange mounted yokes. A locking feature may not be installed on fastener threads. This may allow the driveline fasteners to become loose, increasing the risk of a crash or injury.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10241497-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10241497-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline

## Vehicles listed

- 2023 to 2024 KENWORTH T280
- 2023 to 2024 KENWORTH T380
- 2023 to 2024 KENWORTH T480

## Recalls for the same vehicles and component

- [2025018](/recalls/tc/2025018.md), 2025-01-16: Powertrain
- [24V903000](/recalls/nhtsa/24V903000.md), 2024-12-02: POWER TRAIN:AXLE HUBS
- [24V190000](/recalls/nhtsa/24V190000.md), 2024-03-20: POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT
- [2024161](/recalls/tc/2024161.md), 2024-03-08: Powertrain
- [2023437](/recalls/tc/2023437.md), 2023-08-04: Powertrain
- [23V504000](/recalls/nhtsa/23V504000.md), 2023-07-21: POWER TRAIN:DRIVELINE
- [2022315](/recalls/tc/2022315.md), 2022-06-15: Powertrain
- [22V425000](/recalls/nhtsa/22V425000.md), 2022-06-15: POWER TRAIN:AUTOMATIC TRANSMISSION

## Other bulletins for the same vehicles and component

- [T017](/bulletins/11037625.md), 2026-10-01, Service bulletin: UNKNOWN OR OTHER; POWER TRAIN. Information has been added to identify that ECAT incorrectly identifies PS386 as the correct transmission oil for TX\-8 transmission on certain vehicles.\[
- [24PBE\_24KWE](/bulletins/11028308.md), 2026-02-05, Warranty extension: POWER TRAIN; ELECTRICAL SYSTEM. 24PBE\_24KWE RH Shift Stalk Update Warranty section has been updated with revised verbiage for picture requirements.
- [24PBE/KWE](/bulletins/11027063.md), 2026-01-06, Warranty extension: POWER TRAIN; ELECTRICAL SYSTEM. The right\-hand shift stalk may have an improper wire harness terminal crimp within the wire harness connector. Loss of communication between the right\-hand shift stalk and the vehicle may result in the vehicle being disabled after it comes to a stop, thereby increasing the risk of crash or injury. A warning will appear on the dash display when communication is lost, including transmission or engine warnings, “\!” next to DNR/DNRP indicator, “\-“ in the DNR/DNRP indicator, and/or chimes, depending upon whether you are operating a diesel/gas or battery electric vehicle.
- [24KWE](/bulletins/11026414.md), 2025-12-05, Service campaign: ELECTRICAL SYSTEM; POWER TRAIN. The right\-hand shift stalk may have an improper wire harness terminal crimp within the wire harness connector. Loss of communication between the right\-hand shift stalk and the vehicle may result in the vehicle being disabled after it comes to a stop, thereby increasing the risk of crash or injury. A warning will appear on the dash display when communication is lost, including transmission or engine warnings, “\!” next to DNR/DNRP indicator, “\-“ in the DNR/DNRP indicator, and/or chimes, depending upon whether you are operating a diesel/gas or battery electric vehicle.
- [24KWJ](/bulletins/11021398.md), 2025-08-05, Service bulletin: SUSPENSION; POWER TRAIN. Parts and repair procedures are now available. Certain Kenworth model T380 and T480 chassis equipped with a Meritor 10\-16K or 18\-23K Front Steer Drive Axle have been identified as possibly having insufficient wheel bearing grease. Insufficient lubrication in the wheel bearing may cause the wheel hub to overheat and become damaged, which may increase the risk of a thermal event. The driver may observe noise, excessive steering play, and/or smoke from the front wheel.
- [98\-026](/bulletins/11000766.md), 2024-06-04, Service bulletin: POWER TRAIN. New tools are required to support PACCAR TX\-8 / ZF transmissions. Part numbers E0l\-1012 \(Adapter, Jack TX\-8\), E0l\-1014 \(Front Seal Installer\), and E0l\-1015 \(Rear Seal Installer\) are currently available to order
- [24KWE](/bulletins/10252589.md), 2024-04-03, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. Safety Recall – INTERIM NOTIFICATION Parts are not currently available for this safety recall. This bulletin will be updated once repair parts are available. The right\-hand shift stalk may have an improper wire harness terminal crimp within the wire harness connector. Loss of communication between the right\-hand shift stalk and the transmission may result in the vehicle becoming disabled after it comes to a stop thereby increasing the risk of crash or injury. A transmission fault will appear on the dash display if communication is lost.

JSON: [/v1/bulletins/10241497](/v1/bulletins/10241497)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2023KWE&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10241497&vehicle=Service%20bulletin%2023KWE)