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Service bulletins for the 2018 Western Star 4900

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.

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

By type

By component

Only bulletins with component: Equipment and accessories are shown. Show all

Bulletins, newest first
0606-172019-03-25. Service bulletin. EQUIPMENT; ENGINE. SPN 3226 (ACM) (GHG17)
0607-172019-03-25. Service bulletin. EQUIPMENT. SPN 96 (MCM) (GHG17)
0609-172019-03-25. Service bulletin. EQUIPMENT; ENGINE. SPN 3226 (ACM) (GHG17)
0603-172019-03-25. Service bulletin. EQUIPMENT; FUEL SYSTEM, DIESEL. Fuel System Integrity Check Routine - Two-Filter Fuel System
0608-172019-03-25. Service bulletin. EQUIPMENT. Diagnostic tests - Two Filter System - FSIC Leak Test
0604-172019-03-25. Service bulletin. EQUIPMENT. SPN 712 (CPC) (GHG17)
ICI18-031 FL7662018-12-10. Service bulletin. EQUIPMENT. Important Campaign Information- FL766 Interim Recall Ending ? Final Recall to Begin
Aftertreamtent F2018-12-10. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; EQUIPMENT. Service Information Bulletin for Aftertreamtent Failure Guide
18-029 Auto Mete2018-12-10. Service bulletin. EQUIPMENT. Important Warranty Information on AutoMeter BCT-460DTNA Powernet Assessment Tool: Warranty Requirement and Claim Filing
0805-18 SPN 52102018-12-10. Service bulletin. EQUIPMENT. Service Information Bulletin
0804-18 SPN 14832018-12-10. Service bulletin. EQUIPMENT. Service Information Bulletin
0803-18 SPN 30312018-12-10. Service bulletin. EQUIPMENT. Service Information Bulletin
ICI18-022 FL7732018-12-10. Service bulletin. EQUIPMENT. FL773 ? Interim Recall Notice
sbw00142018-12-10. Service bulletin. EQUIPMENT. Operating Hours for the Customer Assistance Center
0503-182018-12-10. Service bulletin. EQUIPMENT; ENGINE. 0503-18 Relative Cylinder Compression Test
ICI18-016 FL7562018-12-10. Service bulletin. EQUIPMENT. ICI18-016 FL756 ? Automotive Connector Terminal Removal Tool
FL7662018-12-10. Service bulletin. EQUIPMENT. FL766 Western Star Power Cable Studs
DOC-10334622018-10-29. Service bulletin. VISIBILITY; EQUIPMENT ADAPTIVE/MOBILITY. SS 1033462 - WST Cab Mounted Mekra Mirror Cover Chrome Peeling
aeo18M42018-10-29. Service bulletin. EQUIPMENT; POWER TRAIN:AUTOMATIC TRANSMISSION. aeo18M4 Field Service Campaign D18M4
0508-182018-10-29. Service bulletin. FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP; EQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. 0508-18 Aftertreatment
0503-182018-10-29. Service bulletin. ENGINE; EQUIPMENT. 0503-18 Relative Cylinder Compression Test
0501-182018-10-29. Service bulletin. ENGINE; EQUIPMENT; ELECTRICAL SYSTEM. 0501-18 Aftertreatment Control Module (ACM)
sbw310132018-10-29. Service bulletin. EQUIPMENT; TRAILER HITCHES:FIFTH WHEEL ASSEMBLY; EQUIPMENT ADAPTIVE/MOBILITY. With the start of production on March 6, 2018, the fasteners used to attach the slide- and plate-mount style fifth wheels to the outboard angles changed to M16 metric bolts, nuts, and washers.
sbw83292018-10-29. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; STRUCTURE:FRAME AND MEMBERS. In some operating conditions, water may leak into the cab onto the passenger floor through the HVAC fresh air intake on the frontwall on 47,00,4900, and 5700 models.
sbw00052018-10-29. Service bulletin. EQUIPMENT:OTHER:LABELS. If a GVWR certification label is lost or damaged, Freightliner will supply a duplicate label. Log on to DTNAConnect.com and under "DTNAConnect Resources", select the "Tool and Services" plus sign. Select "Request for Certification Labl or OWI." Fillout the form, then select "Review."

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