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NHTSA Recall 19V831000: Torque converter (power train)

Daimler Trucks North America LLC reported this safety recall to NHTSA on , covering an estimated 30 vehicles. It affects 2018–2020 Thomas Built Buses Saf-T-Liner Hdx.

30
vehicles potentially affected
1
model affected
2020
owners notified (August 7)
NHTSA campaign19V831000
Manufacturer campaignFL-839
ComponentPOWER TRAIN › AUTOMATIC TRANSMISSION › TORQUE CONVERTER
Report receivedNovember 19, 2019
Owner notificationAugust 7, 2020
Initiated byManufacturer

Defect

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.

Safety risk

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.

Vehicles covered by recall 19V831000

Make and modelModel years
Thomas Built Buses Saf-T-Liner Hdx2018, 2019, 2020

Being listed here means the campaign covers the model year, not that every car was built with the defect or is still unrepaired. Enter your VIN above to check your specific vehicle. Recall repairs are free at authorised dealers. Source: NHTSA, October 2026.