Not exactly a recall alert, but GM has taken the initiative to stop the sale of cars that possibly have defective air bags.

General Motors has told dealerships in the U.S. and Canada to stop selling 2013 and 2014 Chevrolet Cruzes. 

The concern is that certain vehicles' air bags may contain an air bag inflator module that was possibly assembled using an incorrect part.

GM notified dealers of the stop-sale order on Tuesday, and has said that they have identified about 33,000 Cruzes, mostly in the U.S. and Canada, that may have been built with parts from the bad batch. GM believes that they are close to identifying all of the problem cars. Once all of the cars are identified, GM can lift the order because dealers will be able to isolate the cars with the suspect module and sell the cars that aren't effected.

This is NOT a recall, and the company has not commented as to whether that bad part may be in some cars already sold and on the road.