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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
CALFTL31-0042021-06-26. Service bulletin. WHEELS. Customer Advisory Letter for 4-Hook Chain Hanger Replacement.
SS36722021-06-10. Service bulletin. UNKNOWN OR OTHER. SAM Cab & SAM Chassis Wall Charts
SS37042021-06-10. Service bulletin. ELECTRICAL SYSTEM. Cascadia Fault codes 6.0
SS4690762021-06-10. Service bulletin. UNKNOWN OR OTHER. Odometer racks up mileage when the vehicle is stationary - Cascadia
SS10230692021-06-09. Service bulletin. UNKNOWN OR OTHER. Cascadia - Engine Will Not Crank (No Starter Output from SAM Cab)
SS10329742021-06-09. Service bulletin. UNKNOWN OR OTHER. SS 1032974 High Oil Pressure on 2017 DTNA Vehicles Instrument Cluster Display
SS10330472021-06-09. Service bulletin. UNKNOWN OR OTHER. Service Solution SS 1033047 M2 Battery Drain Problem – Mismatched I...
SS10330942021-06-09. Service bulletin. FUEL SYSTEM, GASOLINE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:MANIFOLD PRESSURE (MAP) SENSOR. Service Solution SS 1033094 KUS Float Tube Fuel Level Sensor Inform...
SS10331982021-06-09. Service bulletin. ELECTRICAL SYSTEM. Service Solution SS 1033198 P4 New Cascadia Refrigerator Power Supp...
SS10334522021-06-09. Service bulletin. ELECTRICAL SYSTEM. SS1033452 Setting the time in the ICUC (New Cascadia)
SS10334822021-06-09. Service bulletin. ELECTRICAL SYSTEM. SS1033482: Trailer Stop lamp activation w/ hand valve (parameter configuration) - P4 New Cascadia
SS10335232021-06-09. Service bulletin. SUSPENSION. Service Solution SS 1033523 Airliner Suspension Dump and Raise Functionality and Troubleshooting
SS10336382021-06-09. Service bulletin. ELECTRICAL SYSTEM. SS 1033638 - Power Window Express Down Module Discontinued
TechTalk5668272021-06-03. Service bulletin. VEHICLE SPEED CONTROL; ELECTRICAL SYSTEM. Tech Talk Discussion Powertrain Overspeed Detected
TechTalk5667762021-06-03. Service bulletin. SERVICE BRAKES, HYDRAULIC; ELECTRICAL SYSTEM. Tech Talk Discussion 2021 P4 jyst brakes drag alarm on all the time
CALFTL42-0042021-05-26. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; SERVICE BRAKES, HYDRAULIC. Customer Advisory Letter for Drive Axle Drum Brake S-Cam U-Bolt Replacement.
CALFTL54-0092021-05-25. Service bulletin. SERVICE BRAKES; SERVICE BRAKES, AIR. Customer Advisory Letter on New Cascadia ABS Fault Codes 520216/31 and 629/11
CALFTL54-0022021-05-25. Service bulletin. ELECTRICAL SYSTEM; PARKING BRAKE. Customer Advisory Letter on Enabling Horn Alarm with the Door Open and the Park Brake Set
SB72-402021-05-24. Service bulletin. STRUCTURE:FRAME AND MEMBERS; STRUCTURE:BODY. On Cascadia vehicles built from November 25, 2013, the drain holes at the bottom of the cab doors were enlarged to improve drainage during the e-coat process in the manufacturing plant. The larger holes allow more cold air to flow through the doors, most noticeably in extreme cold conditions.
FAB2502021-05-19. Service bulletin. UNKNOWN OR OTHER. Freightliner Action Bulletin FAB250 cascadia sales data bo-2020-07-02
FAB2492021-05-19. Service bulletin. UNKNOWN OR OTHER. Freightliner Action Bulletin FAB249 cascadia adr dealer bu-2020-07-02
FAB2092021-05-19. Service bulletin. POWER TRAIN. Freightliner Action Bulletin FAB209 DT12 PTO
FAB1582021-05-18. Service bulletin. POWER TRAIN. Freightliner Action Bulletin FAB158 Cummins Eaton SmartAdvantage
FAB1542021-05-18. Service bulletin. VISIBILITY; STRUCTURE. Freightliner Action Bulletin FAB154 New options for Cascadia
FAB1532021-05-18. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. Freightliner Action Bulletin FAB153 New Harness Highway for Cascadia

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