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Service bulletin SF683

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10251210
Published by NHTSA2024-03-06
Manufacturer's numberSF683
Manufacturer's date2024-02-07
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Field Service Campaign for Detroit Engine Fan HVAC Integration

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Vehicles listed
FREIGHTLINER 114SD2023, 2024
FREIGHTLINER BUSINESS CLASS M22023 to 2024

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
23V7370002023-11-02. ENGINE
20224132022-07-29. Engine
22V5540002022-07-29. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
CXA 03_26_Surge Tank2026-04-02. Other. CX Advocate for discolored coolant surge tanks (24CSA-20)
FleetCom_Heater Core2026-01-08. Other. Fleet Communications for Heater Core Plugging
TSB54-377-FTL2026-01-07. Service bulletin. Technical Service Bulletin Low Coolant Sensor
TSB54-371-FTL2025-11-05. Service bulletin. Technical Service Bulletin for Enabling Virtual Regen Request Switch in ICU Menu
CXA_10_25_Conmet Oil Pan2025-11-05. Other. CX Advocate for ConMet Oil Pan Insert Additional Issues
CXA_9_25_MDEG Updates2025-10-03. Other. CX Advocate for MDEG Updates
24CSA-19Rev2025-09-02. Other. Revised Customer Service Annoucement for No Trouble Found Heavy Duty Engine Product (HDEP) Oil Separator Leaks
CXA 6_25_MDEG Updates2025-06-27. Other. CX Advocate for MDEG Updates
CXA_5_25_MDEG Updates2025-06-04. Other. CX Advocate for CX Advocate for MDEG Updates
CXA 3_25_NOx2025-04-02. Other. CX Advocate for NOx conversion low faults