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Service bulletins for the 2015 Western Star 4700

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.

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

By type

By component

Bulletins, newest first
0202-172018-06-18. Service bulletin. ENGINE. 0202-17 DD13, DD15, and DD16 Cylinder Head Assembly Removal and Installation
FL7212018-06-18. Service bulletin. FUEL SYSTEM, GASOLINE. FL721 CNG Fuel Tank and CPDM Mounting Location
ICI17-0022018-06-18. Service bulletin. FUEL SYSTEM, DIESEL. FL721 Interim Recall Ending ? Final Recall to Begin
15TS92018-06-18. Service bulletin. FUEL SYSTEM, DIESEL. 15TS9 Hydrocarbon Doser Block Fuel Compensation Pressure Sensor
324-152018-06-18. Service bulletin. EQUIPMENT. 324-15 External Component Repair
326-152018-06-18. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:WHEEL SPEED SENSOR/TONE RING; EQUIPMENT:ELECTRICAL. 326-15 Main Shaft Speed Sensor
304-152018-06-18. Service bulletin. EQUIPMENT; ENGINE. 304-15 Diagnostic Tests
303-152018-06-18. Service bulletin. ENGINE. 303-15 Contaminated Fluids
325-152018-06-18. Service bulletin. EQUIPMENT. 325-15 Symptom Diagnosis - ATD Checklist
308-152018-06-18. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER; ENGINE. 308-15 Symptom Diagnostics - Oil Present at the Turbocharger Compressor
323-152018-06-18. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS; EQUIPMENT. 323-15 Symptom Diagnostics ? Noise
306-152018-06-18. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 306-15 SPN 3246 (ACM)(EPA10;GHG14)
307-152018-06-18. Service bulletin. FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS. 307-15 SPN 3480 (MCM) (EPA07;EPA10;GHG14)
321-152018-06-18. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 321-15 SPN 4364 (ACM) (GHG14)
320-152018-06-18. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 320-15 SPN 4374 (ACM) (GHG14)
301-152018-06-18. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. 301-15 SPN 3251 (ACM) (EPA10) and (ACM) (GHG14), 3936 (ACM)
302-152018-06-18. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV); ENGINE. 302-15 Crankshaft Oil Seals
18SP7062018-06-18. Service bulletin. FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP; FUEL SYSTEM, GASOLINE. 18SP706 Replacement of the High Pressure Fuel Pump Camshaft Oil Seal
18SP7122018-06-18. Service bulletin. FUEL SYSTEM, GASOLINE. 18SP712 EPA07 DD15/16 Three-Filter Fuel System to Two-Filter KM59 GEN1 Fuel System Conversion Service Kit
18SP7132018-06-18. Service bulletin. FUEL SYSTEM, GASOLINE. 18SP713 EPA10 DD13 Three-Filter Fuel System to Two-Filter KM59 GEN1 Fuel System Conversion Service Kit
18SP7142018-06-18. Service bulletin. FUEL SYSTEM, DIESEL. 18SP714 EPA10 DD15/16 Three-Filter Fuel System to Two-Filter KM59 GEN1 Fuel System Conversion Service Kit
sbw54612018-06-18. Service bulletin. ELECTRICAL SYSTEM. sbw5461 Guidelines for Repairing or Replacing an Electrical Harness
sbw49162018-06-18. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. sbw4916 2013 OBD/GHG14, 6-Gallon DEF Header Suction Line
14TS162018-06-18. Service bulletin. EQUIPMENT:MECHANICAL; ENGINE. 14TS16 Excessive Overhead Engine Noise on DD Platform Engines
14TS152018-06-18. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE; EQUIPMENT. 14TS15 Issues with PTO and Remote Throttle Combinations

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