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Service bulletins for the 2011 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.

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

By type

By component

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Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
SBW35-0182020-12-30. Service bulletin. POWER TRAIN. Western Star Service Bulletin for Axle Flange Gasket Replaced with O-Ring. Daimler Trucks North America has released a new axle shaft to hub rubber O-ring (part number 11-30728-000) as a replacement for the paper gasket (part number 11-14418-000). The new O-ring will provide better sealing and is reusable. It is quicker and easier to use compared to the paper gasket, because using a paper gasket requires cleaning the hub when the axle shaft is removed.
WP20-018R2020-12-12. Service bulletin. STEERING; POWER TRAIN. Revised Warranty Policy Letter for Alliance/Mascot Aftermarket Warranty and Claim Filing. Revisions are in blue. With Mascot now in partnership with Detroit Reman and Alliance Parts, DTNA is pleased to announce that Mascot coverage has been added to OWL. Remanufactured Alliance/Mascot parts include transmission, differential, steering gear, and steering pump used in an on-highway vehicle applications. The Alliance/Mascot aftermarket warranty coverage period has not changed: depending on the part, coverage is for one (1) or two (2) years and current parts, labor, and reimbursement policies apply.
WP20-0182020-12-12. Service bulletin. STEERING; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; POWER TRAIN. Warranty Policy Letter for Alliance/Mascot Aftermarket Warranty and Claim Filing. With Mascot now in partnership with Detroit Reman and Alliance Parts, DTNA is pleased to announce that Mascot coverage has been added to OWL. Remanufactured Alliance/Mascot parts include transmission, differential, steering gear, and steering pump used in an on-highway vehicle applications. The Alliance/Mascot aftermarket warranty coverage period has not changed: depending on the part, coverage is for one (1) or two (2) years and current parts, labor, and reimbursement policies apply.
0604-172019-04-08. Service bulletin. POWER TRAIN. SPN 712 (CPC) (GHG17)
DOC-10334462018-12-10. Service bulletin. POWER TRAIN. Vehicles with Meritor drivelines bene from a softer durometer center bearing support. Vehicle will continue to have a 1st order driveline vibration after the driveline assembly was rebalanced.
DOC-10334462018-10-29. Service bulletin. POWER TRAIN. SS1033446 Driveline Support Bearing - Meritor Driveline
0405-182018-10-01. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION:COLUMN SHIFT ASSEMBLY; POWER TRAIN. 0405-18 Symptom Diagnostics - Range Up or Down Shift Issue
33-42018-06-25. Service bulletin. POWER TRAIN. 33-4- Bearing Spacer Replacement, ConMet PreSet Steer Hubs
35-112018-06-25. Service bulletin. POWER TRAIN. 35-11 - Bearing Spacer Replacement, ConMet PreSet Drive Hubs
0405-182018-06-18. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). 0405-18 Symptom Diagnostics - Range Up or Down Shift Issue
1118-122018-06-11. Service bulletin. POWER TRAIN. 1118-12 SPN 705-FMI 5 - GHG14
106-132018-06-11. Service bulletin. POWER TRAIN. 106-13 SPN 100-FMI 10 - GHG14
105-132018-06-11. Service bulletin. POWER TRAIN. 105-13 SPN 625-FMI 13 - GHG14
135-132018-06-11. Service bulletin. POWER TRAIN. 135-13 SPN 1243-FMI 14 - GHG14
104-132018-06-11. Service bulletin. POWER TRAIN. 104-13 SPN 1592-FMI 13 and 19 - GHG14
145-132018-06-11. Service bulletin. POWER TRAIN. 145-13 Description and Operation of Gear Train and Related Parts
0312-182018-06-11. Service bulletin. POWER TRAIN. 0312-18 Installation Output Shaft Seal
0311-182018-06-11. Service bulletin. POWER TRAIN. 0311-18 Installation of the Main Shaft Speed Sensor
14TL-72018-03-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 14TL-7Rev DD Platform Flywheel Housing Runout Tool W470589032100
15-0102018-03-05. Service bulletin. POWER TRAIN; FUEL SYSTEM, GASOLINE. 15-010-DLR Transmission Cooler Line Photos
sbw01162018-03-05. Service bulletin. POWER TRAIN. sbw0116 Pilot Bearing Spacer for Detroit Engines with Eaton transmissions
54-582018-02-12. Service bulletin. POWER TRAIN. 54-58 - Cracked Fuses on Powertrain Power Distribution Modules
16TS52018-02-12. Service bulletin. POWER TRAIN. 16TS5 Release of the DD Platform Bearing Failure Guide
14TS212017-11-17. Service bulletin. POWER TRAIN. 14TS21 HDEP Camshaft Position Sensor Change
811-142017-11-17. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 811-14 FMI 7: Internal Error with the DT12 Shift Stalk Lever

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