Replacing the BCM (Body Control Module is not difficult but there are a few cautions.
Don't touch the connector pins or soldered components on the circuit board or something might short out
Make sure the ignition is OFF when disconnecting or reconnecting power to BCM
Make sure you reinstall the connector the correct way. It shouldn't take much force to push it on.
Turn OFF the ignition switch.
Remove the front floor kick-up panel
Pull up on the BCMs lower mounting tab to release the BCM from the bracket.
Release the BCMs upper mounting tabs by lifting the BCM out of the slots in the bracket.
Disconnect the connectors.
Lift the BCM out