GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Driver Seat


Object Number: 1524033  Size: LF
(1)Seat Belt Switch
(2)Heated Seat Element - Driver Back (KA1)
(3)Heated Seat Element - Driver Cushion (KA1)
(4)Seat Belt Switch Connector - Driver
(5)C315 (KA1)
(6)Heated Seat Module - Driver (KA1)
Figure 2:

Passenger Seat


Object Number: 1524032  Size: LF
(1)Heated Seat Element - Passenger Back (KA1)
(2)Seat Belt Buckle/Seat Belt Switch
(3)Heated Seat Module - Passenger (KA1)
(4)C314 (KA1)
(5)Heated Seat Element - Passenger Cushion (KA1)