How do I use the factory remote start on my 2006 Cadillac CTS?

I just bought a 2006 Cadillac CTS and I know it has a factory remote start installed on it. It has the standard GM remote. What combination of buttons do I press to start the car? Thanks in advance.|||If it has the standard GM remote, there should be a button on the top with a curved arrow. First ensure the car has been remotely locked. If it has been remotely locked a double click on the curved arrow key will cause the car to start.