Hello all- I have an 86 El Camino with a 04 LS1 out of a GTO. I am setting up the A/C and I would like to use the computer for compressor control. I know I need the BCM which I can get but I dont know how that will affect the security systems. Once the BCM is on the data line will it start looking for the ign cylinders password and kill the injectors and starter? Can I get one programmed with only the features I want? Many Thanks