WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Heated Seat Back Element-Driver Connector End View
Courtesy of GENERAL MOTORS CORP.
Fig 2: Identifying Heated Seat Back Element-Front Passenger Connector End View
Courtesy of GENERAL MOTORS CORP.
Fig 3: Identifying Heated Seat Control Module-Driver Connector End View
Courtesy of GENERAL MOTORS CORP.
Fig 4: Identifying Heated Seat Control Module-Front Passenger Connector End View
Courtesy of GENERAL MOTORS CORP.
Fig 5: Identifying Heated Seat Cushion Cover-Driver Connector End View