Learning the Restraints ID
WARNING: This page is about a different car, the 2007 Isuzu i-370, 2007 Isuzu i-290, 2007 GMC Canyon, and 2007 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
Perform BCM special function "Setup SDM Serial Number in BCM", then follow the instructions on the screen.