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Service bulletins for the 2020 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.

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

By type

By component

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
FleetCom_Heater Core2026-01-08. Other. ENGINE. Fleet Communications for Heater Core Plugging
FleetCom_SS 3163-FTL2025-12-06. Other. ENGINE. Fleet Communications for Power Steering Reservoir Fill Cap Venting
FleetCom_Low Coolant2025-12-05. Other. ENGINE. Fleet Communications for Low Coolant Sensor
CXA_10_25_Low Coolant2025-11-05. Other. ENGINE. CX Advocate for P4, WST X-Series, DD Engines Low/Critical Low Coolant Warnings
CXA_10_25_Conmet Oil Pan2025-11-05. Other. ENGINE. CX Advocate for ConMet Oil Pan Insert Additional Issues
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
TSB01-001-DDC2025-03-04. Service bulletin. ENGINE. Technical Service Bulletin for GHG17 and Newer DD Platform Heavy Duty Oil Pan Drain Plug Inserts
CXA 1_16_Turbo Oil Drain2025-01-29. Other. ENGINE. CX Advocate for turbo oil drain cracking
CXA 1_16_NOx2025-01-29. Other. ENGINE. CX Advocate for NOx conversion low faults
CXA 1_16_GATS2.42025-01-29. Other. ENGINE. CX Advocate for GATS2.4 being expanding to DD15
CXA 1_16_DD13 Altitude2025-01-29. Other. ENGINE. CX Advocate for DD13 Gen 5 engines operating at high altitude experience EGR slow response fault.
CXA 1_16_CARB Truck Chec2025-01-29. Other. ENGINE. CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the Clean Truck Check.
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
SS3142-FTL2024-12-04. Other. LANE DEPARTURE: BLIND SPOT DETECTION; ENGINE; VISIBILITY/WIPER. Service Solution for J1939 CAN issues for vehicles equipped w/ Bendix Side Radar w/ expanded field of view
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)
CXA 11_21_CARB Truck Chec2024-12-04. Other. ENGINE. CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the Clean Truck Check.
WI24-0192024-12-04. Warranty extension. ENGINE. Warranty Information letter for Detroit Line or Line Seal, High Pressure Fuel Injector Standard Repair Time Updates
CXA_10_17_CARB Truck Chec2024-11-07. Other. ENGINE. CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the Clean Truck Check.
SS3157-FTL2024-11-07. Other. ENGINE. Service Solution for Cascadia with Cummins Engines and eViscous Engine Fan with Communication Issues
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
SS1023366-Detroit2024-11-06. Other. ENGINE. Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
ICI24-0392024-11-06. Other. ENGINE. Important Campaign Infomration letter for DDC D23M1 - Campaign Extended

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