Spent a few hours researching this.
In order for the 2017 Malibu to have remote start, it must have the "CONVENIENCE AND TECHNOLOGY PACKAGE" which adds :
Dual USB charging-only ports
Leather-wrapped shift knob
120-volt power outlet
Leather-wrapped steering wheel
18" aluminum wheels
This doesn't apply to the premier trim, which has these features included. So if you are wondering if your car is remote start capable, see if you have any of the features of the C&T package.
That is not true. My 2017 Malibu LT doesn't have any of those and I was able to get remote start added with OEM remotes from eBay and a trip to a dealer that knew how to program them to the car. I also spent hours researching this before I took the plunge and there is so much differing information out there and the dealers just add to the confusion. You do not need the convenience and technology package to add remote start to the car.