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Service bulletins for the 2012 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.

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

By type

By component

By topic

Bulletins, newest first
811-122018-03-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 811-12 SPN 411-FMI 3
810-122018-03-05. Service bulletin. POWER TRAIN. 810-12 SPN 3842-FMI 3, 4, and 5 (CPC4)
809-122018-03-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; FUEL SYSTEM, DIESEL. 809-12 Removal and Installation of the GHG14 1-BOX From the Vehicle
807-122018-03-05. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 807-12 Removal and Installation of the GHG14 Diesel Exhaust Fluid Dosing Unit Inlet Screen
805-122018-03-05. Service bulletin. ELECTRICAL SYSTEM. 805-12 SPN 4354-FMI 5, 4356-FMI 5, 4355-FMI 5, 4357-FMI 5
804-122018-03-05. Service bulletin. ELECTRICAL SYSTEM. 804-12 SPNs 4354-FMI 5, 4355-FMI 5, 4356-FMI 5, 4357-FMI 5
803-122018-03-05. Service bulletin. ENGINE. 803-12 SPN 4360-FMI 10, 15 (ACM2.1)
802-122018-03-05. Service bulletin. ENGINE AND ENGINE COOLING. 802-12 SPN 520328-FMI 7 - GHG14
801-122018-03-05. Service bulletin. ELECTRICAL SYSTEM. 801-12 SPN 1761-FMI 9 - GHG14
12TS142018-03-05. Service bulletin. ENGINE AND ENGINE COOLING. 12TS14 Repair Facility Input on GHG14 Engine and Aftertreatment System Issues
12CSA192018-03-05. Service bulletin. EQUIPMENT. 12CSA19 GHG14 Rapid Warranty Parts Return.
12-0222018-03-05. Service bulletin. UNKNOWN OR OTHER. 12-022-DLR Daimler Trucks Remarketing Corporation (DTR) Now Requires Pre-approval for Repairs $1,200 (USD) and Greater
14TL-72018-03-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 14TL-7Rev DD Platform Flywheel Housing Runout Tool W470589032100
15TL62018-03-05. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL. 15TL6 W470589129100 ? HDEP HP Fuel Rail Test Caps
15TS32018-03-05. Service bulletin. ENGINE AND ENGINE COOLING. 15TS3 Detroit? Coolant Change From Nitrite Organic Acid Technology
15TS102018-03-05. Service bulletin. ENGINE AND ENGINE COOLING. 15TS10Rev DD Engine Platform Coolant Filter
405-152018-03-05. Service bulletin. FUEL SYSTEM, OTHER:FUEL FILTER. 405-15 Symptom Diagnostics - Hard Start/No Start - Two-Filter System
406-152018-03-05. Service bulletin. EQUIPMENT:ELECTRICAL. 406-15 SPN 97 (MCM) (EPA10) / SPN 97 (MCM) (GHG14)
403-152018-03-05. Service bulletin. EQUIPMENT:ELECTRICAL. 403-15 SPN 677 (MCM)(EPA07)
402-152018-03-05. Service bulletin. EQUIPMENT:ELECTRICAL. 402-15 SPN 2630 (MCM)(EPA10) and SPN 2630 (MCM)(GHG14)
404-152018-03-05. Service bulletin. EQUIPMENT:ELECTRICAL. 404-15 SPN 4364 (ACM) (EPA10)
401-152018-03-05. Service bulletin. EQUIPMENT. 401-15 Cylinder Block
15CSA102018-03-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 15CSA10 The Detroit CSC announcing a new feature ? Ability to attach files to an existing CSC
15CSA92018-03-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 15CSA9 Release of DiagnosticLink® 8.02
18SP7172018-03-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 18SP717 DD13 EGR Actuator Replacement

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