A transmission control module (TCM) software update is now available for certain T680 / T880 / W900 / W990...
Kenworth technical service bulletin 27-011 for 2025-2026 Kenworth T680, 2025 Kenworth W900 and 2025-2026 Kenworth T880 and others.
- Bulletin number
- 27-011 (27-011)
- Component
- Power train
- 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.
Owners of these vehicles have filed 1 complaints in the transmission category.
Vehicles covered
- Kenworth T680 2025-2026 20252026
- Kenworth W900 2025 2025
- Kenworth T880 2025-2026 20252026
- Kenworth W990 2025-2026 20252026
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