General Motors (GM) said today that it has begun shipping to dealers in North America thousands of pieces necessary to repair 1.4 million vehicles affected by a defect in the ignition system.

GM said that lots of repair parts are composed of ignition keys, ignition cylinder and keys for 1.4 million cars from the 2003 to 2007 models affected by the recall.

The owners of another 1.2 million cars from the 2008 to 2011 models in early May will receive an official notification from General Motors informing them of the details of the recall.

GM said the affected vehicle repair, which involves replacing the ignition system, is performed by dealers in about 90 minutes.

The defect allows the ignition system to be placed in unexpected and unintended way off position when the vehicle is running.

The engine shutdown also causes the airbag system to go off.

GM has acknowledged that at least 13 people have died in the United States related to this defect but an advocacy organization of consumers has increased the number to more than 300 accidents.