2024 Kenworth W900B technical service bulletins

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

• Oct 13, 2026 Service bulletinDue to supplier constraints, an authorized aftermarket surge tank has been made available.
• Sep 11, 2026 Service bulletinKenworth: Dealers should check the chassis list and SIR weekly for VIN changes
• Aug 21, 2026 Service bulletinThis optional software update is expected to be available after 08/28/2026.
• Aug 13, 2026 Service bulletinThe verbiage in the Introduction section has been updated.
• Aug 13, 2026 Service bulletinThis optional software update is expected to be available in late August 2026 for chassis equipped with...
• Aug 1, 2026 Service bulletinThis optional software update is expected to be available on 08/07/26 for chassis equipped with EPA 2024...
• Apr 28, 2026 Service bulletin(KW) Certain T680 / T800 / T880 / W900 / W990 have updated GHG labels available for order and installation
• Apr 16, 2026 Service bulletinBogie Crossmember Torque Value Update
• Jan 31, 2026 Service bulletinProcedure pictures updated for clarity
• Dec 31, 2025 Service bulletinCertain vehicle model years 2020-2025 K270, K370, T270, T280, T370, T380, T480, T680, T880, W900 chassis...