Seat Adjuster Switch
WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
Battery positive voltage is supplied at all times to the seat adjuster switch from the MSM and a 10 A fuse located in the I/P block. When the seat switches are pressed they send a 12 V signal to the MSM. The MSM then commands the selected seat motor to move in response to the switch input.