The National Highway Traffic Safety Administration (NHTSA) has opened an investigation into General Motors (GM) over potential engine failures affecting many of

A recall of the affected models, which include the Chevrolet Silverado 1500 and GMC Sierra 1500, may be issued if needed.

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.