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Service bulletins for the 2014 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.

677 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
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
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.
603-132018-06-18. Service bulletin. SERVICE BRAKES, AIR:ANTILOCK; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP. 603-13 SPN 84 -FMI 6 - EPA07-GHG14
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
SF4832018-06-18. Service bulletin. PARKING BRAKE. SF483-DLR Western Star ECC Park Brake Output Signals
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
13TS72018-06-11. Service bulletin. SERVICE BRAKES, AIR:ANTILOCK:WHEEL SPEED SENSOR; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:WHEEL SPEED SENSOR/TONE RING. 13TS7 GHG14 CPC4 Vehicle Speed Sensor Code SPN 84-FMI 6
102-132018-06-11. Service bulletin. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:WHEEL SPEED SENSOR/TONE RING; SERVICE BRAKES, AIR:ANTILOCK:WHEEL SPEED SENSOR. 102-13 SPN 84-FMI 13, 19, 21 (MCM) EPA10-GHG14
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
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.