NHTSA service bulletin

NHTSA Service Bulletin 10185931: 2016, 2017, 2018, 2019, 2021 Fccc 114sd

Official manufacturer communication context for 2016, 2017, 2018, 2019, 2021 Fccc 114sd, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10185931 summary graphic for 2016, 2017, 2018, 2019, 2021 Fccc 114sd
10185931NHTSA document ID
Manufacturer communicationcommunication type
11affected product rows
80/100quality score

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

Technical Service Letter for Detroit Bearing Failures - Standard Diagnostic Times. DTNA is increasing repair strategies for determining the root cause of Detroit DD heavy duty lower end bearing failures. To support this strategy change, Detroit now has two (2) Standard Diagnostic Times (SDTs), easy and difficult, which can be applied to repair orders.

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
FcccXbp2016, 2018Ask for service records and run the exact VIN before purchase.
Freightliner114sd2016-2019Ask for service records and run the exact VIN before purchase.
Freightliner122sd2016, 2017, 2018, 2019, 2021Ask for service records and run the exact VIN before purchase.
FreightlinerArgosy2016-2019Ask for service records and run the exact VIN before purchase.
FreightlinerBusiness Class M22016-2019Ask for service records and run the exact VIN before purchase.
FreightlinerCascadia2016, 2017, 2018, 2019, 2021Ask for service records and run the exact VIN before purchase.
FreightlinerColumbia2016-2019Ask for service records and run the exact VIN before purchase.
Western Star47002016-2019Ask for service records and run the exact VIN before purchase.
Western Star49002016, 2017, 2018, 2019, 2021Ask for service records and run the exact VIN before purchase.
Western Star49x2021Ask for service records and run the exact VIN before purchase.
Western Star57002016, 2017, 2018, 2019, 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 10185931?

Technical Service Letter for Detroit Bearing Failures - Standard Diagnostic Times. DTNA is increasing repair strategies for determining the root cause of Detroit DD heavy duty lower end bearing failures. To support this strategy change, Detroit now has two (2) Standard Diagnostic Times (SDTs), easy and difficult, which can be applied to repair orders.

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.

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