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Navistar recalls 31,467 trucks for suspect fasteners; GM adds 5,861 units

12 models of trucks and buses impacted by improper heat treating

Navistar is recalling more than 31,000 tucks and buses because improperly heated fasteners could fall and make steering unstable. (Photo: Navistar)

Navistar Inc. is recalling 31,467 trucks and buses across its lineup and General Motors is recalling 5,861 medium-duty pickup trucks made by Navistar. Improper heat treating on hex flange lock nuts could lead to the fasteners breaking, resulting in unstable steering and the increased possibility of a crash.

Navistar, owned by Germany’s Traton Group, said it was unaware of any field failures, crashes or injuries related to the condition. The recalled vehicles have nonconforming hex flange lock nuts. Similar vehicles have conforming parts. 

The nonconforming hex flange lock nuts, used between January and August 2022 depending on the vehicle, did not fail at the time of vehicle assembly. Navistar quarantined vehicles in its plants on Aug. 26 until it was sure clean parts were being used in production.

GM’s recall covered 2021-2022 model year Chevrolet Silverado Medium Duty 4500HD/5500HD/6500HD vehicles assembled at Navistar’s Springfield, Ohio, plant.

The first Navistar filing covered 25,822 vehicles, all of which are suspected to have the faulty parts. Included were certain International CV (2021-22) and HV (2022-23) models and 2023 models of the HX, Lonestar, LT, MV and RH. A second recall covered 5,645 units of three 2023 models of IC buses — CV, EV and RE.

Navistar dealers will replace all suspect hex flange lock nuts with those made to its design specifications for form and surface hardness. Dealers and owners of the affected vehicles will be notified by first-class mail beginning Jan. 20.

The National Highway Traffic Safety Administration recall numbers are 22V-869 and 22V-870. The GM recall is NHTSA recall 22V-874.

Editor’s note: Updates with GM recall for Navistar-built vehicles.

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Alan Adler

Alan Adler is an award-winning journalist who worked for The Associated Press and the Detroit Free Press. He also spent two decades in domestic and international media relations and executive communications with General Motors.