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January 29, 2026 Service campaign

TX-12 mtm

Kenworth technical service bulletin FS015 for 2022-2023 Kenworth T680.

Bulletin number
FS015 (FS015)
Component
Power train
Summary
TX-12 MTM Loose Cap Screw Update The chassis list was updated to indicate T680 or T680 Next Gen. SRT codes B25-28A and B25-28B apply to T680 Next Gen chassis.

Owners of these vehicles have filed 4 complaints in the transmission category.

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