With the recent cold weather in New England I've had a few opportunities to use the remote start. I've only gotten 281 operating distance out of the factory unit. This was direct line of sight and I tried both FOBS with the same results. I thought the distance was 800 feet but then I realized I had only read that in the Accessories guide. Not the Owners Manual.
Owners Manual --> The factory installed system says REMOTE STARTING SYSTEM — IF EQUIPPED This system uses the Remote Keyless Entry (RKE) transmitter to start the engine conveniently from outside the vehicle while still maintaining security. The system has a range of approximately 300 ft (91 m).
Accessories guide --> The accessory version is 800 feet. "OEM tested remote start system that allows you to start your vehicle from as far away as 800 feet" Production Remote Start Kit 82212137 2.0 $259.00