Pretty sure you can install it yourself but you'll need access to Techstream to program it.
FWIW if my truck hadn't come with the remote start I would look at aftermarket options like Clifford/Python. I had one of those on my Acura and it was much better than the factory remote start
- Range was about 1/2 mile (vs about 30 feet)
- Vehicle runtime could be modified up to 20 or 30 minutes (vs a fixed 10 minutes)
- Could trigger additional functions like rear/mirror defrosters
- 2-way communication so you'd know if it actually started successfully, and would alert you when it shut down
- Could enter the vehicle and drive away once I put the key in so long as I never touched the brake until it was in the Run position (vs shutting off as soon as you open a door)
- 1/2-2/3 the cost (IIRC I spend $300 installed at Abt Electronics)