Service bulletins for the 2017 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.
670 on file from NHTSA, as of 2026-10-19.
By type
By component
| SS1034577 | 2019-12-03. Service bulletin. EQUIPMENT; POWER TRAIN; STRUCTURE; EQUIPMENT ADAPTIVE/MOBILITY. Service Solution to address WST Cab drone / vibration / tapping Under acceleration for vehicles w/Eaton Manual Trans. |
|---|---|
| SBW00-004 | 2019-11-24. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Service Bulletin explaining Western Star's courtesy engineering policy. |
| OLFL821-Emission | 2019-11-21. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. Owner's Letter for emissions recall FL821 for Western Star 4900 exhaust pipes emitting excess pollutants. Pipe support brackets lacks durability and may cause pipe to crack at bellows and weld breaks to occur at the flange. |
| SBW41-002 | 2019-11-21. Service bulletin. SUSPENSION; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Service Bulletin for midship bearing replacement. This procedure applies to all vehicles built with driveshafts SPL140, SPL170 or SPL250 with first order driveline vibration. |
| D19R5 | 2019-11-21. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Updated Recall Safety Bulletin for vehicles in Australia and New Zealand with DD15 engines regarding high pressure fuel lines. Language was clarified that this only applies to Australia and New Zealand. |
| FL821 | 2019-11-20. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; EQUIPMENT. Emissions Recall for Western Star 4900 exhaust pipes emitting excess pollutants. Pipe support brackets lacks durability and may cause pipe to crack at bellows and weld breaks to occur at the flange. |
| SS1034499 | 2019-10-30. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Service Solution on failing RX modules in Western Star vehicles. |
| D19R5 | 2019-10-29. Service bulletin. ENGINE AND ENGINE COOLING. Export Recall Safety Bulletin for vehicles in Australia and New Zealand with DD15 engines regarding high pressure fuel lines. |
| D19M1 | 2019-10-29. Service bulletin. ENGINE AND ENGINE COOLING. Field Service Campaign for GHG17 Detroit DD16 software reprogramming. |
| 17TS9 | 2019-10-25. Service bulletin. ENGINE AND ENGINE COOLING. Technical Service Letter communicating that information on DD Heavy Duty Platform Belt and Belt Tensioner can be found on TechLit. |
| P&SSep2019 | 2019-10-08. Service bulletin. EQUIPMENT. Parts and Service Committee meeting minutes |
| DOC-1034500 | 2019-10-03. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:APPLIANCE:AIR CONDITIONER. Service Solution to fix AC cooling performance due to improper HVAC function. |
| 19TL-15 | 2019-09-28. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Tool Letter for ICC5 Programming Cable |
| SBW54-073 | 2019-09-28. Service bulletin. ELECTRICAL SYSTEM. Service Bulletin for Powernet Distribution Box Functional Changes |
| SB47-015 | 2019-09-28. Service bulletin. FUEL SYSTEM, GASOLINE. Service Bulletin for Equiflo Fuel System Breather Tube Inspection |
| 15CSA-3REV | 2019-09-10. Service bulletin. EQUIPMENT. Customer Service Announcement Letter Revision for Dealers/Distributors Accessing DDEC Backdoor Passwords |
| 19TL-14 | 2019-09-09. Service bulletin. POWER TRAIN; EQUIPMENT. Tool Letter for New Final Drive Driver Controlled Differential Lock Spring Compressor. These new axles require a new tool to compress the Driver Controlled Differential Lock (DCDL) spring. To remove and install the DCDL spring, the tool DSN0FDA17001 is needed. |
| 19TL-12 | 2019-09-09. Service bulletin. POWER TRAIN; EQUIPMENT. Tool Letter for New Final Drive Pinion Cover Install Tool |
| 19TL-13 | 2019-09-09. Service bulletin. POWER TRAIN; EQUIPMENT. Tool Letter for DT12 Seal Protector Sleeve |
| 19TL-11 | 2019-09-09. Service bulletin. EQUIPMENT. Tool Letter for New Tool Kit Replacement Components DDE DKICHA018006 Components 1, 2 and 3 |
| 19TL-10 NVH | 2019-09-09. Service bulletin. STRUCTURE. Communication to assist the field with service vibration issues on DTNA vehicles |
| 19CSA-12 BCT | 2019-09-09. Service bulletin. ELECTRICAL SYSTEM. PowerNet Assessment Tool Repair Procedure |
| 19CSA-13 | 2019-09-09. Service bulletin. ENGINE AND ENGINE COOLING. Service Systems Development provided document to service locations on price list reflects current charges to engine horsepower ratings for HDEP and MDEG engine platforms. |
| D18M4 | 2019-09-07. Service bulletin. POWER TRAIN. Field Service Campaign for Remanufactured Detroit DT12 Transmissions |
| 19-011WP | 2019-09-06. Service bulletin. EQUIPMENT. Warranty Policy Letter to communicate Detroit Return Changes |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.