Service bulletins for the 2021 Western Star 5700
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.
107 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Glass, wipers and mirrors are shown. Show all
| SBW83-030 | 2022-07-02. Service bulletin. VISIBILITY. Updated Western Star Service Bulletin for HVAC Actuator Replacement |
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| ICI21-030 | 2021-11-03. Service bulletin. VISIBILITY. SF626 Western Star Window Replacement Inspection Notification. This letter is to inform you that Field Service Campaign SF626 Western Star Window Replacement Inspection Notification campaign was released. |
| TechTalk7774 | 2020-11-03. Service bulletin. VISIBILITY; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Tech Talk discussion on SS 1034711 HADLEY MIRROR |
| SS1034711 | 2020-05-23. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES. Service Solution for Hadley Upper Mirror Glass Vibration. The following suggestions are not guaranteed to eliminate or fix the Hadley mirror vibration concern. We have had mixed results in field-testing. In some cases, these solutions eliminate or reduce the vibration and in others, it does not seem to make a difference. DTNA continues to work on a permanent solution to this concern. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.