WenmarOpen by Wenmar Pro

Service bulletins for the 2015 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.

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

By type

By component

Bulletins, newest first
18SP6872017-10-15. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). 18SP687 18SP687 DD15/16 EGR Actuator Replacement Service Kit
20-182017-10-15. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. 20-18 - Western Star 4800 and 4900 Radiator Mounting, Update?EPA10
18SP7192017-10-15. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE. 18SP719Rev EPA10 DD13 Three-Filter ESOC Fuel System to Two-Filter KM59 GEN1 Fuel
18SP7142017-10-15. Service bulletin. FUEL SYSTEM, GASOLINE. 18SP714Rev EPA10 DD1516 Three-Filter Fuel System to Two-Filter KM59 GEN1 Fuel
16TS242017-10-15. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. 16TS24 GHG14 DD Platform Engines With Code SPN: 3216/FMI 18, SCR Inlet NOx Sensor Drift Low
15M12017-06-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. FINAL_15M1_BULLETIN GHG14 DD PLATFORM SOFTWARE REPROGRAMMING FOR AUTO ELEVATE
COPY 15M32017-06-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. COPY OF TO_BE_POSTED_15M3_SNL_11-NOV-2015
AEO15M32017-06-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. AEO15M3 GHG14 DD PLATFORM MODEL YEAR 2015 SOFTWARE REPROGRAMMING
14TS16REV2017-06-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL. 14TS16REV EXCESSIVE OVERHEAD ENGINE NOISE ON GHG14 DD PLATFORM ENGINES
AEO15M12017-06-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ELECTRICAL SYSTEM:SOFTWARE. AEO15M1 GHG14 DD PLATFORM SOFTWARE REPROGRAMMING FOR AUTO ELEVATE
18SP7222017-06-05. Service bulletin. FUEL SYSTEM, OTHER:DELIVERY. 18SP722 DD13 KM59 GEN1 BUS TWO-FILTER SYSTEM AMPLIFIER, NEEDLE AND PLV RETURN FUEL LINE CLEARANCE PACKAGE SERVICE KIT
18SP7202017-06-05. Service bulletin. FUEL SYSTEM, OTHER. 18SP720 EPA10 DD15/16 THREE-FILTER ESOC FUEL SYSTEM TO TWO-FILTER KM59 GEN1 FUEL SYSTEM CONVERSION SERVICE KIT
18SP7202017-06-05. Service bulletin. FUEL SYSTEM, OTHER. 18SP720 EPA10 DD15/16 THREE-FILTER ESOC FUEL SYSTEM TO TWO-FILTER KM59 GEN1 FUEL SYSTEM CONVERSION SERVICE KIT 2
18SP7182017-06-05. Service bulletin. FUEL SYSTEM, OTHER. 18SP718 EPA07 DD15/16 THREE-FILTER ESOC FUEL SYSTEM TO TWO-FILTER KM59 GEN1 FUEL SYSTEM CONVERSION SERVICE KIT
SBW00042017-06-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. SBW0004 WESTERN STAR COURTESY ENGINEERING POLICY
FL7182017-06-01. Service bulletin. POWER TRAIN:AXLE HUBS. FL718 FRONT AXLE HUB RATING
1021-162017-06-01. Service bulletin. ENGINE AND ENGINE COOLING. 1021-16 SPN 110 (MCM)(EPA07EPA07;GHG14), SPN 110 (CPC)(GHG14)
1018-162017-06-01. Service bulletin. ENGINE. 1018-16 SYMPTOM DIAGNOSTICS - NOISE
1017-162017-06-01. Service bulletin. ENGINE. 1017-16 ENGINE MODEL AND SERIAL NUMBER DESIGNATION
18SP713REV 18SP72017-05-31. Service bulletin. FUEL SYSTEM, OTHER. 18SP713REV 18SP713 –EPA10 DD13 THREE-FILTER FUEL SYSTEM TO TWO-FILTER KM59 GEN1 FUEL SYSTEM CONVERSION SERVICE KIT
16TL202017-05-31. Service bulletin. ENGINE. 16TL20 HEAVY DUTY ENGINE VALVE STEM SEAL INSTALLING DRIFT AND SLEEVE
16TL172017-05-30. Service bulletin. ENGINE. 16TL17 LABEL UPDATE FOR GHG14 TEST AFTERTREATMENT CONTROL MODULE (ACM)
09 09-162016-10-20. Service bulletin. ENGINE. 0909-16 EXCESSIVE OIL CONSUMPTION
09 06-162016-10-20. Service bulletin. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. 0906-16 LOW PRESSURE FUEL PUMP
09 02-162016-10-20. Service bulletin. ENGINE. 0902-16 SYMPTOM DIAGNOSTICS - BELT COMING OFF, SHREDDING OR MISALIGNMENT

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