I had aftermarket ones that can stay on as long as half hour. Was hoping stock remote can do it too.
Using the FLRSGM10 add-on for the factory remote keyless, you can set up a 35 minute run time.
If you haven't gotten a remote start yet, the FLRSGM10 is a great option, since it can be pre-programmed which allows you to do the install yourself in under 20 minutes, and there is no cutting or splicing - it's all T-harnesses. It runs off of the factory remote, by pressing the "lock" button three times to start/stop.
It can also accept the ASCL6 phone app module that allows you to start/stop & track from a phone app that is free for the first year, then $29 per year after that - FAR cheaper that the OnStar option!
If you have any questions on it, let me know or check it out on our website.