WARNING: This page is about a different car, the 2005 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Power Seat Schematics (w/o A45)
Courtesy of GENERAL MOTORS CORP.
Fig 2: Heated Seat Schematics
Courtesy of GENERAL MOTORS CORP.
Fig 3: Heated/Cooled Seat Schematics
Courtesy of GENERAL MOTORS CORP.
Fig 4: Memory Seat Module Power, Ground and DLC Schematics