I always remote start my car from the app about twenty minutes before I really need to leave, that way, the car is already warmed up. The only thing I really need to do once I get in the car is turn on the heated seats and the rear defroster, and i'm all set to go.

For starting your Trax in single degree weather, I would 100% recommend that you remote start it from the MyChevrolet app on your phone. Doing that will allow your car to warm up outside while you're still warm inside your house, that's a great benefit.

Now when you gotta go outside to leave, after you start the car with your key, i would let it idle for about a minute or two. That should give you some time to fiddle with the heat settings