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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

Only bulletins with component: Brakes are shown. Show all

Bulletins, newest first
WSTCAE121-20142021-05-18. Service bulletin. SERVICE BRAKES, HYDRAULIC; SERVICE BRAKES, AIR. AIR BRAKE RESERVOIRS - NEW TRIPLE CHAMBER AIR TANK
TS10337682020-07-31. Service bulletin. SERVICE BRAKES, HYDRAULIC. Training Solution for Western Star Front Brake Squeal - Burnishing Procedure. The brake burnishing procedure can be used to help reduce brake related noise or imbalance concerns which may occur in the field.
FL773 Lowmax Bra2019-04-08. Service bulletin. SERVICE BRAKES. Recall Bulletin FL773 Lowmax Brake Hoses
FL773 Lowmax Bra2019-04-01. Service bulletin. SERVICE BRAKES, AIR:DISC. Recall Bulletin FL773 Lowmax Brake Hoses
DOC-10337682018-12-10. Service bulletin. SERVICE BRAKES. TS 1033768: Western Star Front Brake Squeal - Burnishing Procedure
DOC-10334172018-12-10. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC; SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS. SS 1033417: WST 4900 Low Max w/Disc Brakes Front Brake Hose rubbing Hood fender
DOC-10334172018-10-29. Service bulletin. SERVICE BRAKES, HYDRAULIC. SS 1033417: WST 4900 Low Max w/Disc Brakes Front Brake Hose rubbing Hood fender
FL7562018-10-29. Service bulletin. SERVICE BRAKES, HYDRAULIC; SERVICE BRAKES, AIR; ELECTRICAL SYSTEM. Brake Light Pressure switch may not activate the brake lights with a light application of the brake pedal.
ICI15-0032018-06-25. Service bulletin. SERVICE BRAKES. ICI15-003-DLR FL676 - Interim Recall Notice
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
ssbw420102018-06-18. Service bulletin. AIR BAGS; SERVICE BRAKES. ssbw42010 Inspección de fugas de aire del transportista concesionario
sbw42062018-06-18. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM; SERVICE BRAKES, AIR:DRUM. sbw4206 Brake Shimmy?Meritor® SteeLite X30? Brake Drum With Excessive Runout
42-0102018-06-11. Service bulletin. EQUIPMENT; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; PARKING BRAKE:CONVENTIONAL:AIR; SERVICE BRAKES, AIR. Transport Dealer Air Leak Inspection
sbw42062018-03-05. Service bulletin. SERVICE BRAKES. sbw4206 Brake Shimmy - Meritor SteeLite X30 Brake Drum With Excessive Runout
326-152018-03-05. Service bulletin. SERVICE BRAKES, AIR:ANTILOCK:WHEEL SPEED SENSOR; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:WHEEL SPEED SENSOR/TONE RING. 326-15 Main Shaft Speed Sensor
FL6762018-02-12. Service bulletin. SERVICE BRAKES. Haldex Life Seal Brake Chambers
sbw42052018-01-16. Service bulletin. SERVICE BRAKES, AIR:DISC:PADS. sbw4205 Bendix Air Disc Brake Thermal Overload Issues

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