Technical Service Bulletin 27-011 — 2025 KENWORTH T680
POWER TRAIN
Bulletin Details
| TSB ID | 27-011 |
| Manufacturer | |
| Vehicle | 2025 KENWORTH T680 |
| Component | POWER TRAIN |
| Communication Date |
Bulletin Summary
A transmission control module (TCM) software update is now available for certain T680 / T880 / W900 / W990 chassis with Eaton Endurant transmissions running TCM software version 5516372, where the PTO fails to operate or engage. Please see the attached Eaton bulletin TAIB- 1021 in the Attachments section of this bulletin for complete details.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.