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

Driver Seat


Object Number: 1405602  Size: MF
(1)Heated Seat Element - Driver Cushion (KA1)
(2)Seat Belt Switch
(3)Heated Seat Element - Driver Back (KA1)
(4)Seat Adjuster Switch - Driver (AG1/ASN)
(5)Heated Seat Switch - Driver (KA1)
Figure 2:

Under Driver Seat


Object Number: 1405603  Size: MF
(1)Seat Front Vertical Motor (AG1)
(2)Seat Horizontal Motor (AG1)
(3)Heated Seat Cushion Temperature Sensor - Driver (KA1)
(4)Seat Rear Vertical Motor (AG1)
(5)C300
(6)Heated Seat Control Module - Driver (KA1)
Figure 3:

Front Passenger Seat (KA1)


Object Number: 1405604  Size: MF
(1)Heated Seat Element - Front Passenger Back
(2)Heated Seat Element - Front Passenger Cushion
(3)Heated Seat Switch - Passenger
Figure 4:

Under Front Passenger Seat (KA1)


Object Number: 1405610  Size: MF
(1)C310
(2)Heated Seat Control Module - Passenger
(3)Heated Seat Cushion Temperature Sensor - Passenger