the dei product will have no il leffects on teh trucks advance security group stuff. it works in cocnert with it and like mentioned earlier its all plug and play right to teh ecm/pcm and the other modules. then just tuck it away and off you go, one note of caution...
if you get teh VALET switch and they put it in the drivers glove box... watch what you put in the box, my junk set off my valet and weird stuff going down the highway, then the alarm wouldnt reset.
had to drive back home with no alarm , took the installer about 30 seconds to reset it , now i know the door lock sequence to reset the valet overide.