The following safety recalls were issued Monday by the National Highway Traffic Safety Administration (NHTSA):
Daimler Trucks North America (DTNA) is recalling certain 2020-2022 Thomas Built EFX and HDX school buses. The nut for the power cable stud on the alternator may not have been tightened properly, which can cause a loose cable connection. A loose power cable connection may cause electrical arcing, which can increase the risk of a fire. NHTSA says potentially 1,434 vehicles are affected by the recall.Great Dane Trailers is recalling certain 2020-2022 Everest, Champion, and Freedom trailers. The screws that secure the bracket cover and end cover of the iABS unit may have been improperly tightened, which can allow the screws to loosen and back out, resulting in a loss of pressure in the unit. Pressure loss in the iABS unit can cause a loss of brake function, increasing the risk of a crash. NHTSA says potentially 200 vehicles are affected by the recall.Mack Trucks is recalling certain 2021 Granite and LR vehicles. A machining defect may cause pressure to build in the power steering pump and break the shaft seal, resulting in a loss of power steering assist. A loss of power steering assist increases the risk of a crash. NHTSA says potentially 79 vehicles are affected by the recall.Navistar is recalling certain 2020-2023 IC CE school buses. The engine control module (ECM) may set a fault code that results in an unexpected engine shut down. Unexpected engine shut down can increase the risk of a crash. Additionally, a disabled school bus may require an evacuation procedure in an uncontrolled traffic situation, increasing the risk of injury to passengers. NHTSA says potentially 7,004 vehicles are affected by the recall.Oshkosh Corporation is recalling certain 2020-2021 S-Series vehicles. A machining defect may cause pressure to build in the power steering pump and break the shaft seal, resulting in a loss of power steering assist. A loss of power steering assist increases the risk of a crash. NHTSA says potentially 563 vehicles are affected by the recall.