Well..defeats the whole purpose. In fact, I did and still did not work. I ended up using the actual key fob to 'precondition' the car from the window. I thought the real benefit of using the App is when car is not in sight and one can not use the actual key fob.
I am trying to figure out when the key fob on the MyChevy App is supposed to be 'in range'. I tried a couple of times to 'precondition' the car in the morning from inside the house when the car is parked outside and the option does not become available. Car must not be more than 50 ft. away.