Service bulletins for the 2018 Western Star 4800
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.
148 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Brakes are shown. Show all
| TechTalk566647 | 2021-06-02. Service bulletin. SERVICE BRAKES, AIR. Tech Talk Discussion 121-8861-005 3 Compartment air tank with one way internal check valve |
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| WSTCAE165-2018 | 2021-05-18. Service bulletin. SERVICE BRAKES, AIR:SPIDER; SERVICE BRAKES, HYDRAULIC. Certain Stamped Spider Drum Brakes Replaced by Cast Spider Drum Brakes on Steer Axles |
| sbw54065 | 2021-03-15. Service bulletin. SERVICE BRAKES, HYDRAULIC. sbw54065 GHG17 Heavy Duty Engine Platform Vehicle Dash Oil Pressure Guage |
| TS1033768 | 2020-07-31. 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. |
| FL794 | 2019-03-18. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER. FL794 Brake Caliper Mounting Bolts Dealer Bulletin |
| ICI19-003 FL794 | 2019-03-11. Service bulletin. SERVICE BRAKES, AIR:DISC:CALIPER. FL794 - Revised Bulletin Brake Caliper Mounting Bolts |
| FL794 REV | 2019-03-11. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER. FL794 Recall Campaign- Brake Caliper Mounting Bolts |
| DOC-1033768 | 2018-12-10. Service bulletin. SERVICE BRAKES. TS 1033768: Western Star Front Brake Squeal - Burnishing Procedure |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.