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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

Bulletins, newest first
MYCOM_09122025-12025-10-03. Other. SERVICE BRAKES. My Communications for Parts Alert ABS Harness
MYCOM_09022025-12025-10-03. Other. FUEL/PROPULSION SYSTEM. My Communications for UFI 0-Ring Announcement
PB47-022-FTL2025-10-03. Service bulletin. FUEL/PROPULSION SYSTEM. Revised Parts Bulletin for Cascadia 23-inch Diameter Fuel Tanks
CXA_8_25_Tech Questions2025-09-02. Other. POWER TRAIN; ENGINE; UNKNOWN OR OTHER. CX Advocate for technical questions/issues raised
MYCOM_08212025-12025-09-02. Other. FUEL/PROPULSION SYSTEM. My Communications for UPDATE TO DTNA PARTS QUALITY ALERT STOCK HOLD on UFU R61709
MYCOM_08182025-12025-09-02. Other. FUEL/PROPULSION SYSTEM. My Communications for Parts Hold on UFU Filter
TSB35-034-FTL2025-08-02. Service bulletin. WHEELS. Revised Technical Service Bulletin for Hub Oil Level in Final Drive (NFD) Top Performance Axles on Decked Vehicles
PB33-004-FTL2025-07-08. Service bulletin. STEERING. Parts Bulletin for Tie Rod Assembly Part Breakdown
TSB26-056-FTL2025-05-02. Service bulletin. POWER TRAIN. Service Solution for DT12 Oil Plug Ports
FAB3432025-05-02. Other. UNKNOWN OR OTHER. Features and Benefits for Detroit Connect UpfrontService Extension
FAB3422025-05-02. Other. UNKNOWN OR OTHER. Features and Benefits for Detroit Connect Base Service Renewal
SS3176-FTL2025-05-02. Other. ELECTRICAL SYSTEM. Service Solution for ICC5 Erroneous Electric Power Steering Warning Message
CXA 4_25_Elec Pwr Steer2025-05-02. Other. ELECTRICAL SYSTEM. CX Advocate for ICC5 erroneous electric power steering warning message (SS3176-FTL)
SS3176-FTL2025-04-02. Other. ELECTRICAL SYSTEM. Service Solution for ICC5 Erroneous Electric Power Steering Warning Message
TSB54-276-FTL2025-04-02. Service bulletin. UNKNOWN OR OTHER. Technical Service Bulletin for Load Dump Switch Inspection and Installation on Dometic Refrigerators
SS3174-FTL2025-04-02. Other. ELECTRICAL SYSTEM. Service Solution for ICC5 B-Panel Gauges Intermittently Not Being Displayed
CXA 3_25_SAS01T to SAS03T2025-04-02. Other. STEERING. CX Advocate for SAS01T to SAS03T replacement (TSB54-373-FTL, TSB54-097-WST)
CXA 3_25_NOx2025-04-02. Other. ENGINE. CX Advocate for NOx conversion low faults
CXA 2_25_Turbo Oil Drain2025-03-04. Other. ENGINE. CX Advocate for turbo oil drain cracking
CXA 2_25_NOx2025-03-04. Other. ENGINE. CX Advocate for NOx conversion low faults
MYCOM_02102025-12025-03-04. Other. ENGINE. My Communications for Variable Speed Coolant Pump for DD13 Engines - Cascadia/57X Only
TSB54-373-FTL2025-03-04. Service bulletin. STEERING. Technical Service Bulletin for SAS01T to SAS03T Replacement Information
TSB26-057-FTL2025-03-04. Service bulletin. POWER TRAIN. DT12 OVX Transmission Refresh
TSB26-055-FTL2025-03-04. Service bulletin. POWER TRAIN. Technical Service Bulletin for DT12 Excessive Wear
TSB01-001-DDC2025-03-04. Service bulletin. ENGINE. Technical Service Bulletin for GHG17 and Newer DD Platform Heavy Duty Oil Pan Drain Plug Inserts

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