My concerns go as followed:
1/ The bcm contains the immobiliser or part of it
2/ because of this, if I buy a used unit (way way cheaper than a stealership) will the immobiliser transponder chips that will come with the used BCM let me operate the car or won't they mate with the car and start her up.
So basically I'm after any advice or people's experiences replacing the BCm with preferably a used one thanks

