Complaints lead NHTSA to examine certain Silverado, GMC Sierra, Chevrolet Tahoe, Suburban, GMC Yukon and Cadillac Escalade trucks and SUVs.

The NHTSA has opened a preliminary evaluation into possible issues with V8 engines in Chevrolet Silverado and GMC Sierra pickups, as well other vehicles.

The National Highway Traffic Safety Administration (NHTSA) has opened an investigation into reports of engine failures involving General Motors’ 6.2-liter L87 V8 engine.The popular and powerful small-block V8 powers GM's full-size pickup and SUV offerings from all three of its key brands,

The probe, which follows 39 complaints from vehicle users, aims to determine the scope and severity of the alleged defects.

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’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.