Vehicle recall 19V831000 · November 19, 2019
2018-2020 Thomas Built Buses SAF-T-Liner HDX
The Flex-Plate/Torque Converter fasteners may have been insufficiently tightened.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- Daimler Trucks North America LLC (DTNA) is recalling certain 2018-2020 Thomas Built Saf-T-Liner HDX school buses equipped with Detroit DD8 Engines and Allison Transmissions. The Flex-Plate/Torque Converter fasteners may have been insufficiently tightened.
- Consequence
- The loose bolts can become lodged in the starter, disabling the bus, resulting in an evacuation in an uncontrolled traffic situation, increasing the risk of an injury.
- Remedy
- DTNA will notify owners, and dealers will inspect and tighten the fasteners, as necessary, free of charge. DTNA issued owners an interim notification on December 13, 2019. The recall began August 7, 2020. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-839.
- Notes
- Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Recall details
- NHTSA campaign
- 19V831000
- Reported to NHTSA
- November 19, 2019
- Filed by
- Daimler Trucks North America LLC
- Manufacturer campaign
- FL-839
- Owner notification
- August 7, 2020
- Vehicles potentially affected
- 30
- Initiated by
- the manufacturer
- Components
- Power train › Automatic transmission › Torque converter
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Thomas Built Buses SAF-T-Liner HDX (2018-2020): 2020, 2019, 2018
Has your Thomas Built Buses been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Thomas Built Buses dealer can also check your VIN. Recall repairs are free.