Service bulletins for the 2006 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.
176 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Engine are shown. Show all
| 803-14 | 2017-11-17. Service bulletin. ENGINE. 803-14 FMI 16,18: Intake Manifold Pressure Too High and Low |
|---|---|
| 14-040A | 2017-11-17. Service bulletin. ENGINE. 14-040_Additional_CLOs Additional Detroit CLOs for the Heavy Duty Engine Platform |
| 1005-14 | 2017-11-17. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:SOFTWARE. 1005-14 Oil Coolant Module |
| 14-040 | 2017-11-17. Service bulletin. ENGINE. 14-040 Additional Detroit CLOs for the Heavy Duty Engine Platform |
| sb2080 | 2017-11-17. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. sb2080 Australian CST M1400 Isolated Radiator Retrofit |
| SB-49-12 | 2012-06-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; FUEL SYSTEM, DIESEL. WESTERN STAR: AROUND THE DIESEL EXHAUST FLUID (DEF) AN EXCESSIVE AMOUNT OF CRYSTAL OR POWDER BUILT UP INDICATES A LEAK CAUSED BY EVAPORATION OF DEF EXPOSED TO AIR AND/OR DAMPNESS. *PE |
| SF383A | 2008-03-19. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. FREIGHTLINER - MODINE RADIATOR MOUNTING JOINTS. MODELS AFFECTED: SPECIFIC FREIGHTLINER CENTURY CLASS S/T AND COLUMBIA VEHICLES, STERLING L-LINE VEHICLES AND WESTERN STAR 4900 VEHICLES MANUFACTURED BETWEEN AUG. 28, 2006 AND JAN. 29, 2007. *NJ |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.