The U.S. National Highway Traffic Safety Administration said it was opening a preliminary probe into vehicles manufactured by General Motors after receiving reports alleging engine failure.

Complaints received by the agency allege a bearing failure that may result in either an engine seizure or a breaching of the engine block. GM said it is cooperating with the agency.

The National Highway Traffic Safety Administration is investigating reports of alleged engine failures in GM's 6.2-liter L87 V-8, an engine used in a wide variety of trucks and SUVs. NHTSA estimates that more than 877,710 vehicles could be vulnerable to the issue.

The National Highway Traffic Safety Administration said on Wednesday it has closed an investigation on Daimler Truck's 313,101 North American vehicles over an engine wiring concern.

The National Highway Traffic Safety Administration (NHTSA) has opened a preliminary probe into more than 877,000 trucks and SUVs built by General Motors. The agency’s Office of Defects Investigation (ODI) has received 39 complaints of engine failure due to a problem linked to faulty connecting rod bearings.

The National Highway Traffic Safety Administration on Friday opened an investigation into 870,000 cars manufactured by General Motors after receiving reports of engine failure.

The National Highway Traffic Safety Administration’s Office of Defects Investigation has begun looking into engine failures involving an estimated 877,710 vehicles from GM. The vehicles are full-sized trucks and SUVs equipped with the 6.2-liter L87 V8 engine.

The U.S. National Highway Traffic Safety Administration (NHTSA) has initiated an investigation into 877,710 General Motors vehicles.

The ODI currently investigates L87 engine failures in 2019 through 2024 trucks and sport utility vehicles from the Chevy, GMC, and Caddy brands