GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2004 🢒 Century 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Power Seat Component Views
Figure 1:

Power Seat Subsystem
Object Number: 1366792 Size: LF
(1)Seat Belt Switch
(2)Heated Seat Element - Cushion Cover Connector (KA1)
(3)Heated Seat Back Element Connector (KA1)
(4)Seat Adjuster Switch (AG1/AG2)
(5)Manual Seat Recliner Lever
(6)Seat Adjuster Motor Assembly
(7)C311 Shown, C312 Similar
(8)Heated Seat Control Module (KA1)
Figure 2:

Center Console (D06)
Object Number: 1246259 Size: LF
(1)Heated Seat Switch - Driver (KA1)
(2)Traction Control Switch (Regal)
(3)Heated Seat Switch - Passenger (KA1)
(4)Cigar Lighter
(5)Auxiliary Power Outlet (Regal)
(6)C240 (Regal)
(7)I/P Wiring Harness
Figure 3:

Cross Body Wiring
Object Number: 581283 Size: LF
(1)C311
(2)Inflatable Restraint Sensing and Diagnostic Module Connector
(3)Heated Seat Switch - Driver
(4)Heated Seat Switch - Passenger
(5)C312