Power Seat Switches
WARNING: This page is about a different car, the 2008 Cadillac CTS. 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 memory seat module (MSM) and the MEM Logic/RF MASSAGE fuse located in the rear fuse block. When the seat switches are pressed they send a 12-volt signal to the MSM. The MSM then commands the selected seat motor to move in response to the switch input.