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Service bulletins for the 2022 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.

389 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
CALDDC01-0022022-06-04. Service bulletin. ENGINE AND ENGINE COOLING. Customer Advisory Letter for Gen 5 DD15 Proactive Exhaust Rocker Arm Replacement.
SB83-1372022-04-01. Service bulletin. ENGINE AND ENGINE COOLING. Revised Freightliner Service Bulletin for ParkSmart Eberspaecher Auxiliary Heater Service. This bulletin replaces the version dated May 2015. The note in General Information has been revised to include New Cascadia. Espar information has been changed to reflect a company name change to Eberspaecher.
SB49-0422022-03-03. Service bulletin. ENGINE AND ENGINE COOLING. Freightliner Service Bulletin for DEF Connector Reinforcement Caps.
CALFTL49-0042022-02-05. Service bulletin. ENGINE AND ENGINE COOLING. Exhaust Pipe and Cab Support Bracket Interference
PM Sensor Shrtg2021-06-19. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Supply chain shortage notice. Model Year 2022 Freightliner, Western Star, Freightliner Custom Chassis, and Thomas Built Bus vehicles manufactured with the following engines have been built without a Particulate Matter (PM)/Soot sensor: •DD15 Gen 5 (Gats 2.0) (with a June 2021 or later GHG build date) •DD13 Gen4 (1-box) (with a June 2021 or later GHG build date) •Cummins B6.7 (with a June 2021 or later GHG build date) •Cummins X15 with ratings of 400-500HP (with a June 2021 or later GHG build date) As a result, the vehicle has a non-conforming On-Board Diagnostic (OBD) system. The engine manufacturers will pay to install the OBD PM sensor and corresponding software through a recall once sensors become available.
TechTalk5669492021-06-03. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. Tech Talk Discussion Gen 5 DD15 Engine noise metal to metal clunk/grunt. Bad Vibration dampener/ balancer
TechTalk5666452021-06-02. Service bulletin. ENGINE AND ENGINE COOLING. Tech Talk Discussion Cylinder #1 Exhaust Pressure Pulse Too High
FAB1532021-05-18. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. Freightliner Action Bulletin FAB153 New Harness Highway for Cascadia
TechTalk566161K2021-05-06. Service bulletin. ENGINE AND ENGINE COOLING. Tech Talk discussion on gen 5 valve train issue. 21TS-06 released for issue.
WI21-0092021-04-24. Service bulletin. ENGINE AND ENGINE COOLING. Warranty Information letter announcing that DTNA is increasing the Standard Diagnostic Times (SDTs) shown. The updated after treatment system (ATS) diesel exhaust fluid (DEF) pump times will be applied to repair orders opened on or after April 12, 2021.
CALFTL49-0022021-03-26. Service bulletin. ENGINE AND ENGINE COOLING. Customer Advisory Letter for Adding Exhaust Shim to ATS Exhaust Outlet and Replacing Exhaust Elbow and Clamp. An undersized ATS outlet pipe was installed on these vehicles, causing the exhaust clamp used to fasten the exhaust elbow to not clamp securely.
SB49-0382021-03-24. Service bulletin. ENGINE AND ENGINE COOLING. Revised Freightliner Service Bulletin for netized Fill Neck for Six-Gallon DEF Tanks. A design change removed the magnets from the fill necks for some 6-gallon diesel exhaust fluid (DEF) tanks. If the vehicle is equipped with a non-magnetic fill neck 04-32529-000, it can be updated to a magnetic neck 04-32529-001. This bulletin replaces the version dated 04/18/2017. Updated availability of magnetic fill neck option for other diesel exhaust fluid (DEF) tank part numbers.
TechTalk122412021-03-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Tech Talk discussion on Opti Idle P4 Cascadia Trouble-shooting is in the New Cascadia manual.
TechTalk81462021-03-03. Service bulletin. ENGINE AND ENGINE COOLING. Tech Talk discussion on Gen 5 DD15 100/31 no troubleshooting.
21OEM-062021-03-01. Service bulletin. ENGINE AND ENGINE COOLING. Starting on November 23, 2020, DiagnosticLink 8.13 (Build 4527) was made available. Current subscribers of DiagnosticLink 8.11 or 8.12 may upgrade to DiagnosticLink 8.13 at no cost. All DTNA Service shops & OEM locations are required to maintain the latest version of software on each of their stations.
20TS-07REV2021-03-01. Service bulletin. ENGINE AND ENGINE COOLING. Revised Technical Service Letter for Cold Weather Faults on GHG17/21 DD13 with MCM Software Version 14. Due to colder weather, there may be an increase in the frequency of faults, noted below, on GHG17/21 DD13 trucks built after June 5th 2019. This is due to a calibration issue in the current MCM software (14.1.1.5 or 14.2.1.3). New software is scheduled for release in the first quarter of 2021 that will address these faults.
SB54-3082021-02-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE; EQUIPMENT. Freightliner Service Bulletin for Programming Chassis Electronic Control Units (ECUs) With DiagnosticLink.
WI21-0062021-02-26. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Warranty Information Letter for Detroit NOx Sensor Circuit Fault Codes - Claim Guidelines.
21TS-022021-01-28. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY. Technical Service Letter for GHG17 DD16 Vehicles Equipped with Global Aftertreatment (GATS). some GHG17 DD16 powered vehicles will be equipped with the Global Aftertreatment System (GATS), instead of a 1-Box aftertreatment.
SB54-3372021-01-22. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Freightliner Service Bulletin for Coolant Level Sensor Wiring Repair. On New Cascadia vehicles, depending on the tension applied to the harness located at the coolant level sensor and its mounting locations, wiring damage can occur, resulting in one or more of the below listed fault codes.

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