Certain chassis equipped with a PACCAR TX-12 transmission have Mechatronic Transmission Module (MTM) rail...
Kenworth technical service bulletin FS015 for 2022-2023 Kenworth T680 and 2022-2023 Peterbilt 579.
- Bulletin number
- FS015 (FS015)
- Component
- Power train
- Summary
- Certain chassis equipped with a PACCAR TX-12 transmission have Mechatronic Transmission Module (MTM) rail cylinder cap screws that could become loose. This may cause the transmission not to shift and the transmission service lamp to illuminate.
Owners of these vehicles have filed 10 complaints in the transmission category.
Vehicles covered
- Kenworth T680 2022-2023 20222023
- Peterbilt 579 2022-2023 20222023
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