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Service bulletin DOC-1033256

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10151580
Published by NHTSA2018-12-10
Manufacturer's numberDOC-1033256
Manufacturer's date2018-09-18
NHTSA componentSUSPENSION

NHTSA's summary

Service Solution for Western Star 4900, Frame Beaming - Rough Ride Vibration in bob tail mode

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Suspension

Vehicles listed
WESTERN STAR 49002007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
18V9130002018-12-19. SUSPENSION:FRONT:CONTROL ARM; STEERING:LINKAGES:TIE ROD ASSEMBLY; STEERING
20174072017-08-24. Suspension
17V5210002017-08-24. SUSPENSION:FRONT:SPRINGS:LEAF SPRING ASSEMBLY
12V2660002012-06-12. SUSPENSION:FRONT
20114072011-11-17. Suspension
07V3160002007-07-24. SUSPENSION:REAR
20072302007-07-11. Suspension

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
SS734-WST2024-06-05. Other. Service Solution for Thread Spring Pin Suspension Alignment & Installation
SBW31-0162020-07-31. Service bulletin. Western Star Bulletin for Non-Airliner Rear Suspension Crossmember Fastener Change. With the start of production on March 2, 2020, the fasteners used to assemble the non-Airliner rear suspension (bogie) crossmember have changed. The rear suspension bogie crossmember gussets to the C-channel will be assembled with 5/8–18 fasteners. This change includes a revision to a higher friction nut that requires an increase in tightening torque. The new higher friction nut can be identified by its green color.
SS10346212020-01-21. Service bulletin. Service Solution for Western Star vehicles equipped with Hendrickson AIRTEK Axles experiencing a Harsh Ride.
SBW41-0022019-11-21. Service bulletin. Service Bulletin for midship bearing replacement. This procedure applies to all vehicles built with driveshafts SPL140, SPL170 or SPL250 with first order driveline vibration.
19TL-92019-08-08. Service bulletin. DTNA Special Tools Group has approved the use of Haweka Axis4000 aftermarket alignment system for use on DTNA products at DTNA service locations. The Axis4000 system uses the reference points required by DTNA for precise, accurate, and repeatable measurements. Axis4000 is a sophisticated, user-friendly system that utilizes computer based camera-radio technology and references the center line of the frame for measuring and providing alignment results to DTNA specifications.
sbw00152019-04-08. Service bulletin. Service Bulletin Vibration and Harsh Ride Troubleshooting
DOC-10341712019-04-01. Service bulletin. SS 1034171 Airliner Rear Suspension Chassis Lean Troubleshooting
sbw0015 Vibratio2018-12-10. Service bulletin. Vibration and Harsh ride Troubleshooting
DOC-10332562018-06-11. Service bulletin. SS: 1033256 - WST Frame Beaming - Rough Ride Vibration in bob tail mode
17TS102018-06-11. Service bulletin. Detroit? DT12? Split Rod Bushing Repair