General Motors ignition switch fix is gaining momentum. The first several thousand replacement kits, including new ignition switches, ignition cylinders and key sets, have been shipped out to dealers. GM also sent out the first 1.4 million recall letters to affected owners last week to let them schedule the repair. That is a little over half of the roughly 2.6 million vehicles that need their parts replaced.

The letter tells owners of affected models from between 2003 and 2007 that GM is ready for them to schedule the repair. The replacement parts should take around 90 minutes to install, it claims. Owners of 2008-2011 vehicles will have to wait a few more weeks for the recall to begin. The automaker will send a letter to them in early May, and they will receive a second letter later alerting them that the parts are available. In the meantime, the company advises them to drive with nothing more than their car key on their keyring.