I'm having the problem as well. I think the issue is with the sentry key. The remote start sends a signal to a coil wrapped around the ignition key cylinder that it supposed to fake it into thinking a real key is in the ignition. If that coil comes lose, the truck thinks you are trying to start it with a fake key copy and freaks out. The dealership did a bad job installing that coil on my vehicle, and I had to redo it. Apparently I didn't make it stick so I'm going to have to redo it again.