Anti theft/ security problem
So I finished swapping everything over in my motor swap from 3.8 to 4.6 including dash harness, steering column, and BCM. Now when I try to fire up the car it cranks over but that's it. My theft light on the gauges flashes a lot as soon as I put the key in. So I'm guessing my anti theft is gonna have to be reset, is there any way I can do it myself or am I goin to have to bring it to the dealership?