Thomas Built · Canada · Crit
Thomas Built HDX Non-School Bus, HDX School Bus: Heater and Defroster
Affects Thomas Built HDX Non-School Bus, HDX School Bus · 2009–2010 — about 43 vehicles.
The hazard
On certain buses, a heater coolant flow valve actuator O-ring may allow coolant leakage into the heater core compartment and the actuator Printed Circuit (PC) board area, potentially causing overheat and melt. An overheated and/or melted actuator may result in a vehicle fire causing property damage, personal injury or death. Correction: Dealers will replace the dash heater actuator with a more robust version.
What to do
Contact your dealer; the remedy details were not included in the filing.
Critical — crash/injury risk now
High — injury risk; see remedy
Moderate — fix at next service
Low — minor / informational