Thomas Built Buses recall: Engine and engine cooling
What is wrong
Daimler Trucks North America LLC (DTNA) is recalling certain model year 2008-2015 Thomas Built Buses Saf-T-Liner HDX school buses manufactured May 25, 2008, to December 18, 2014, and equipped with certain Cummins Westport ISL G engines. Excessive engine crankcase pressures may cause the 90-degree elbow of the vent tube assembly to detach from the crankcase ventilation breather, possibly allowing engine oil to come into contact with hot surfaces.
What could happen
If engine oil comes into contact with a hot surface, there is an increased risk of a fire.
The fix
Cummins will notify owners on behalf of DTNA, and dealers secure the ends of the 90-degree elbow. In addition, the electronic control module (ECM) will be reprogrammed with software that can adjust the engine output under misfire conditions to limit crankcase pressures. These repairs will be performed free of charge. The recall began on June 12, 2015. Owners may contact DTNA customer service at 1-800-745-8000, or Cummins customer service at 1-800-343-7357. DTNA's number for this recall is FL-681.
Vehicles covered
- Thomas Built Buses Saf-T-Liner Hdx 2008–2015
Facts
- NHTSA recall number
- 15V344000
- Type
- Vehicle
- Filed by
- Daimler Trucks North America LLC
- Reported to NHTSA
- Jun 3, 2015
- Owners notified
- Jun 12, 2015
- Vehicles or items affected
- 746
- Started by
- The manufacturer
- Built
- May 25, 2008 to Dec 18, 2014
- Part
- Engine and engine cooling › Engine
- Maker's own recall number
- FL-681
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.
Other recalls for the same vehicles
- Thomas Built Buses recall: Engine and engine cooling Feb 13, 2026
- Thomas Built Buses recall: Engine and engine cooling Feb 13, 2026
- Thomas Built Buses recall: Equipment adaptive/mobility Dec 9, 2025
- Thomas Built Buses recall: Steering Sep 11, 2025
- Thomas Built Buses recall: Equipment Jul 24, 2024
- Thomas Built Buses recall: Structure Oct 12, 2022
To check one car, enter its 17-character VIN on the official NHTSA page: a recall may cover only some vehicles of a model year.
Recall data: National Highway Traffic Safety Administration (NHTSA). Nebula is not affiliated with or endorsed by NHTSA.