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Service bulletins for the 2021 Freightliner Cascadia

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.

509 on file from NHTSA, as of 2026-10-19.

By type

By component

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
TSB54-366-FTL2025-01-03. Service bulletin. POWER TRAIN; LANE DEPARTURE: BLIND SPOT DETECTION; ENGINE. Technical Service Bulletin for J1939 Communication Errors with Cummins Engine Automated or Allison Transmission and Bendix Side Radar
TSB35-039-FTL2024-12-06. Service bulletin. POWER TRAIN. Revised Technical Service Bulletin for Detroit New Final Drive Standard Performance Forward Carrier Change to Top Performance Passive Lube Management.
TSB35-032-FTL2024-12-04. Service bulletin. POWER TRAIN. Technical Service Bulletin for Detroit Drive Axle Identification and Lubrication
CXA 11_21_P4 J1939 Commun2024-12-04. Other. LANE DEPARTURE: BLIND SPOT DETECTION; ENGINE; POWER TRAIN. CX Advocate for P4 J1939 Communication Errors (TSB54-366-FTL)
TSB42-080-FTL2024-12-04. Service bulletin. POWER TRAIN. Revised Technical Service Bulletin for ABS Wheel Speed Fault Code Correction for MBSP Equipped Vehicles. Description of Revisions: This bulletin replaces the version dated 10/09/2024. Updated FMI number in the metadata.
TSB54-366-FTL2024-11-07. Service bulletin. ENGINE; POWER TRAIN; LANE DEPARTURE: BLIND SPOT DETECTION. Technical Service Bulletin for J1939 Communication Errors with Cummins Engine Automated or Allison Transmission and Bendix Side Radar
TSB42-080-FTL2024-11-07. Service bulletin. POWER TRAIN. Technical Service Bulletin for ABS Wheel Speed Fault Code Correction for MBSP Equipped Vehicles
CXA 9_24_NFD fill plug2024-10-04. Other. POWER TRAIN. CX Advocate for NFD fill plugs
TSB42-080-FTL2024-10-04. Service bulletin. POWER TRAIN. Revised Technical Service Bulletin for ABS Wheel Speed Fault Code Correction for MBSP Equipped Vehicles. Description of Revisions: This bulletin replaces the version dated 07/17/2024. Added metadata for fault code.
TSB42-080-FTL2024-09-07. Service bulletin. POWER TRAIN. Revised Technical Service Bulletin for ABS Wheel Speed Fault Code Correction for MBSP Equipped Vehicles. Description of Revisions: This bulletin replaces the version dated 07/17/2024. Added metadata for fault code.
TSB35-039-FTL2024-09-07. Service bulletin. POWER TRAIN. Revised Technical Service Bulletin for Detroit New Final Drive Standard Performance Forward Carrier Change to Top Performance Passive Lube Management. Description of Revisions: The bulletin replaces the version dated 05/14/2024. Creation date has been updated.
CXA 7_24_Differential Cov2024-08-02. Other. POWER TRAIN. CX Advocate for differential maintenance
TSB42-080-FTL2024-08-02. Service bulletin. POWER TRAIN. Revised Technical Service Bulletin for ABS Wheel Speed Fault Code Correction for MBSP Equipped Vehicles. Description of Revisions: This bulletin replaces the version dated 06/27/2024. Table references has been updated.
TSB35-039-FTL2024-08-02. Service bulletin. POWER TRAIN. Revised Technical Service Bulletin for Detroit New Final Drive Standard Performance Forward Carrier Change to Top Performance Passive Lube Management. Description of Revisions: The bulletin replaces the version dated 05/14/2024. Creation date has been updated.
CXA 06_24_Clutch Bolts2024-07-09. Other. POWER TRAIN. CX Advocate communication for clutch bolts
TSB42-080-FTL2024-07-09. Service bulletin. POWER TRAIN. Revised Technical service Bulletin for ABS Wheel Speed Fault Code Correction for MBSP Equipped Vehicles. Description of Revisions: This bulletin replaces the version dated 05/13/2024. ECU part number, frequently asked questions, addendum and validation of repair has been added.
TSB42-080-FTL2024-06-05. Service bulletin. POWER TRAIN. Technical Service Bulletin for ABS Wheel Speed Fault Code Correction for MBSP Equipped Vehicles
TSB35-042-FTL2024-06-05. Service bulletin. POWER TRAIN. Technical Service Bulletin for New Final Drive Over Heat Diagnostic
TSB35-039-FTL2024-06-05. Service bulletin. POWER TRAIN. Technical Service Bulletin for Detroit New Final Drive Standard Performance Forward Carrier Change to Top Performance Passive Lube Management
SS3142-FTL2024-04-02. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. Service Solution for J1939 CAN issues for vehicles equipped with Bendix Side Radar with expanded field of view
SB54-3572022-10-04. Service bulletin. POWER TRAIN. Freightliner Service Bulletin for Resetting the Maintenance System for DT12 Oil Changes. This service bulletin describes required maintenance system parameter changes that apply to New Cascadia vehicles with Detroit DT12 transmissions used for line haul applications.
CALFTL26-0022022-09-01. Service bulletin. POWER TRAIN. Customer Advisory Letter for Eaton Endurant Transmissions Require Oil Coalescing Air Dryer Cartridges
SB54-3482022-06-04. Service bulletin. POWER TRAIN. Updated Freightliner Service Bulletin for Meritor Rear Axle Temperature Parameters. This bulletin replaces the version dated 1/22/2022. The build date in General Information has been added.
ICI22-0172022-05-03. Service bulletin. POWER TRAIN. Important Campaign Information Letter for DDC D21M1 Termination Date Extended. This letter is to inform you that a revised bulletin for Detroit Diesel Field Service Campaign D21M1, DT12 Transmission Drive Shaft Cover Plug Reseal has been EXTENDED for an additional three months. Please use the extended termination date for all work under D21M1 from this point forward. REVISION: D21M1 termination date extended to July 1, 2022.
SB26-0542022-04-01. Service bulletin. POWER TRAIN. Revised Freightliner Service Bulletin for DT12 Transmission Control Harness Chafing the Transmission Control Module

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.