Locate the BCM as follows
The BODY CONTROL MODULE is under the dash left side above the parking brake pedal area.
To get to it, remove the 10mm bolt that holds the parking brake release lever to the trim.
Remove the 2 philips screws from the bottom.
Remove the left dash fuse block cover.

Ensure the ignition switch is in the OFF position.
We need connector C1 Light green 27 pins

and C3 light blue 25 pins.

Both show the end that goes into the BCM so be sure to count the opposite for looking at the back.