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

Left Front Seat, on the Left Side of the Seat Cushion


Object Number: 524977  Size: LF
(1)LH Front Power Seat Switch and LH Front Seat Lumbar Switch (RH Similar)
(2)LH Front Seat Belt Retractor (RH Similar)
Figure 2:

Left Rear Corner of the Passenger Compartment, Above the Rear Seat


Object Number: 525023  Size: LF
(1)Radio Antenna Module
(2)LH TV Antenna Amplifier
(3)LH Rear Seat Belt Retractor
Figure 3:

Right Corner of the Passenger Compartment, Above the Rear Seat


Object Number: 525020  Size: LF
(1)RH Rear Seat Belt Retractor
(2)RH TV Antenna Amplifier
(3)TV Antenna Module
(4)Rear Speaker (Subwoofer)
Figure 4:

Center Rear of the Passenger Compartment, in the Rear Seat Back


Object Number: 525046  Size: LF
(1)RH Rear Heated Seat Module
(2)Seat Belt Control Module
(3)LH Rear Heated Seat Module
Figure 5:

Left Front of the Passenger Compartment, Under the Left Front Seat


Object Number: 592166  Size: LF
(1)LH Front Seat Lumbar Horizontal Position Sensor
(2)LH Front Seat Lumbar Horizontal Motor (RH Similar)
(3)LH Front Seat Lumbar Vertical Motor (RH Similar)
(4)LH Front Seat Massage Module (RH Similar)
(5)LH Front Seat Lumbar Vertical Position Sensor (RH Similar)