Code alarm is the brand I have. Paid for it with the truck as part of the deal but it does require a separate fob and the engine cuts off when you open the door. It doesn't bother me too much. I typically let it run about 10 minutes before I get in the truck. Bad for mpg but I hate cold
I haven't had any issues but I haven't tried to work the truck too hard either. I haven't had the Tranny update yet but I've my truck since August and no issues. 5000 miles in so far. Dclb off road