General Motors Co. is recalling 674 2012 Cadillac CTS vehicles after it discovered some vehicles had improperly assembled components that could cause the loss of braking ability.

GM said some vehicles have a power vacuum brake boost pushrod retention nut that was not properly tightened; the nut could loosen and allow the pushrod to separate from the brake pedal, reported The Detroit News.

On Oct. 28, GM discovered the problem and issued a stop-sale the following day for the 2012 CTS vehicles, which means they couldn't be sold before they were inspected and repaired if necessary.

GM spokesman Alan Adler said Friday no crashes or injuries had been reported because of the condition and that most of the vehicles being recalled were still at dealerships or on their way to dealerships.

GM dealers will inspect the vehicles and if necessary tighten the nuts. GM notified owners and dealers on Nov. 1.