In the box where the RCM is located, it's RCM, then BCM, then ECM ( or PTCM )
BCM is 05136131AA
PTCM (ECM ) is 05101505AA
RCM is 05099007AA

all this from the old parts manual, most have probably been superseded during production.

I know nothing about s j2534 pass thru.
I do know the BCM is VIN coded.