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Service bulletin TSB-26-059-FTL

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11034534
Published by NHTSA2026-07-06
Manufacturer's numberTSB-26-059-FTL
Manufacturer's date2026-06-22
NHTSA componentPOWER TRAIN

NHTSA's summary

Technical Service Bulletin for Chelsea PTO Quality Issue

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Vehicles listed
FREIGHTLINER 108SD2026
FREIGHTLINER 114SD2026
FREIGHTLINER 122SD2026
FREIGHTLINER BUSINESS CLASS M22026
FREIGHTLINER CASCADIA2026
FREIGHTLINER CASCADIA FIFTH GEN2026 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
CXA 09_26_Chelsea PTO2026-10-05. Other. CX Advocate for Chelsea PTO Quality Notice (TSB 26-059 FTL, TSB-26-010 WST).
MAN 00000728682026-10-05. Other. Detroit Transmissions Manual Update for Symptom Diagnostics — DT12 C/D Box Range Shift to Neutral with Reversing Events (Aborts)
TS-0004-002026-09-02. Other. Truck Equipment Manufacturer Solution for Odometer Pause & PTO Mode Delay with Customer Installed SSPTO & Controls
FleetCom 1_TransOil Cool2026-09-02. Other. Fleet Communications for eAxle Breather Hose Relocation to Reduce Water Intrusion Risk
CXA 08_26_TransOil Cooler2026-09-02. Other. CX Advocate for Transmission Oil Cooler Lines Rubbing
TS-0013-002026-08-03. Other. Truck Equipment Manufacturer Solution for PTO Mode Delay for Driving PTO
CXA 06_26_H Plate2026-07-06. Other. CX Advocate for Eliminating Retaining H-Plate; Revised to Native Voss Quick­Connect
CXA 05_26_TransOil Cooler2026-06-01. Other. CX Advocate for Transmission Oil Cooler Lines Rubbing APU Coolant Lines
TS-0008-002026-06-01. Other. Truck Equipment Manufacturer Solution for RSS with PTO Engagement
TSB-26-001-DDC2026-05-02. Service bulletin. Revised Technical Service Bulletin for DT12 Range Detent Diagnostic