TSB-26-059-FTL
Service Bulletin/Repair Instructions
Technical Service Bulletin for Chelsea PTO Quality Issue
Vehicle report
2026 FREIGHTLINER 122SD
Service bulletins
11 bulletinsTechnical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
FleetCom_Hood Tilt CPC
Other
Fleet Communications for Hood Tilt CPC update and OI Comfort Mode parameters
FleetCom_CX Top Quality
Other
Fleet Communications for CX Top Quality Issues
FleetCom_Cab Chassis MFG
Other
Fleet Communications for cab chassis manufacturing
FleetCom_Wire, Air Rout
Other
Fleet Communications for Wiring/Airing Routing and Clipping
FleetCom_HVAC Eco Mode
Other
Fleet Communications for HVAC Eco Mode - SoP Disabled Jan 2026
FleetCom_Heater Core
Other
Fleet Communications for Heater Core Plugging
CXA 10_25_Air Dryer Purge
Other
CX Advocate for Experiencing Excessive Purging from Air Dryer
CXA_10_25_Torque Quality
Other
CX Advocate for Torque Quality
CXA_10_25_TuffTrac Gen2
Other
CX Advocate for TufTrac Gen2 Suspension Field Issues
CXA_10_25_Wire, Air Rout
Other
CX Advocate for Wire/Airing Routing and Clipping
Reading this report
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.