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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
ICI24-0072024-03-06. Service bulletin. VEHICLE SPEED CONTROL. Important Campaign Information letter for SF669 Campaign Suspended
ICI24-0062024-03-06. Service bulletin. ENGINE AND ENGINE COOLING. Important Campaign Information letter for FL974 - Revised Bulletin & Population
FL9742024-03-06. Service bulletin. ENGINE AND ENGINE COOLING. Revised Emissions Recall: Cummins DEF Sensor Shortage. REVISION: Some vehicles formerly in Group F have been moved to Group G and have been assigned a new part number as specified in Table 1. An SRT for 'Calibration Code Only: Update or Confirm' has been added, as shown in Table 2, to be used when a new DEF header is not required. There have been some other minor changes to the work instructions and SRT times.
FL9742024-02-06. Service bulletin. ENGINE AND ENGINE COOLING. Emissions Recall: Cummins DEF Sensor Shortage
ICI24-0022024-02-06. Service bulletin. ENGINE AND ENGINE COOLING. Important Campaign Information letter for DDC D21M6 and D22M6 - Campaign Extended
SF6692024-01-05. Service bulletin. VEHICLE SPEED CONTROL. Field Service Campaign for Adaptive Cruise Control
SF672_V42023-12-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Revised Field Service Campaign for Common Telematics Platform Software Update
SB60-1802023-11-03. Service bulletin. STRUCTURE. Revised Service Bulletin for Cab Isolator for Trucks Domiciled in Mexico
SB60-1782023-11-03. Service bulletin. EQUIPMENT. Service Bulletin for Relocating the Bluetooth Microphone
SS3123-FTL20232023-10-05. Service bulletin. TRAILER HITCHES. Service Solution for P4 New Cascadia Web Mounted 5th Wheel Ramps
SB60-1802023-10-05. Service bulletin. STRUCTURE. Revised Freightliner Service Bulletin for Cab Isolator for Trucks Operating in Extreme Conditions. Description of Revisions: This bulletin replaces the version dated June 2023. The title has been updated.
CALFTL54-0312023-10-05. Service bulletin. ENGINE AND ENGINE COOLING. Customer Advisory Letter for Towing Related to Low Coolant Faults
FP31-0312023-09-16. Service bulletin. STRUCTURE. Freightliner Parts Bulletin for Aero Bumper Air Dam Part Supersession
CALFTL31-0062023-09-02. Service bulletin. STRUCTURE. Customer Advisory Letter for Center Drive Wheel Fairing Frame Rail Support Bracket Inspection
SB54-3382023-08-05. Service bulletin. VISIBILITY. Revised Service Bulletin for Updating HVAC ECU Software to Fix Front HVAC Evaporator Freezing and Improve Espar Heater Cool Down. Description of Revisions: This bulletin replaces the version dated December 2021. The general information and warranty information has been updated.
SF6722023-06-29. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Field Service Campaign for Common Telematics Platform Software Update
543022023-05-22. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. ABS Light illuminating in the ICU.
8V4912023-05-22. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. ICUC Bulb check function.
SF662_V22023-05-05. Service bulletin. EQUIPMENT. Revised Freightliner Field Service Campaign for TomTom Android Black Box Update
ICI23-0142023-05-05. Service bulletin. EQUIPMENT. Important Campaign Information Letter for SF662 TomTom Work Instructions - Correction to Fuse Number.
ICI23-0102023-04-07. Service bulletin. STEERING. Important Campaign Information letter communicating that SF660 Field Service Campaign is Replaced by FL967.
D21M6REV42023-04-07. Service bulletin. ENGINE AND ENGINE COOLING. Revised Detroit Field Service Campaign for Gen 5 Customer Demo Unit (CDU) and Pre-Series Unit Retrofits. D21M6 REVISION : Page 1 of the bulletin under "Replacement Parts" and "IMPORTANT" have been revised.
SF6622023-04-07. Service bulletin. EQUIPMENT. Field Service Campaign for TomTom Android Black Box Update
SF660A2023-02-04. Service bulletin. STEERING. Revised Field Service Campaign for Drag Link Tapered Joint
CALFTL54-0272023-02-02. Service bulletin. ELECTRICAL SYSTEM. Customer Advisory Letter for New Cascadia Vehicles Equipped With D-Climate P4 Ground Cable Anti-Corrosion Sealer Issue.

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