NHTSA service bulletin

NHTSA Service Bulletin 10175417: 2019-2021 Western Star 4700

Official manufacturer communication context for 2019-2021 Western Star 4700, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10175417 summary graphic for 2019-2021 Western Star 4700
10175417NHTSA document ID
Manufacturer communicationcommunication type
5affected product rows
5source rows grouped

Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.

Quick answer

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.

What this bulletin may mean before buying

Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.

Affected products listed in this communication

MakeModelModel yearsBuyer note
Western Star47002019-2021Ask for service records and run the exact VIN before purchase.
Western Star48002019-2021Ask for service records and run the exact VIN before purchase.
Western Star49002019-2021Ask for service records and run the exact VIN before purchase.
Western Star57002019-2021Ask for service records and run the exact VIN before purchase.
Western Star69002019-2021Ask for service records and run the exact VIN before purchase.

Buyer checklist

  1. Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
  2. Check recall campaign pages for safety actions that may require dealer repair.
  3. Compare this bulletin with common problem pages for the same model and component area.
  4. Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
  5. Use the used-car buying checklist and get an independent inspection.

Frequently asked questions

What is NHTSA service bulletin 10175417?

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.

Is a service bulletin the same as a recall?

No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.

How should a used-car buyer use this bulletin?

Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.

Check the exact VIN before you buy

Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.

Get Full Report