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

Heated Seats 1 of 3 - Except ULT


Object Number: 1608429  Size: FS
Master Electrical Component List
Control Module References
Rear Heated Seats - 2 of 3
B+ Bus - 1 of 2
IPC/DIC, LH HID, RH HID, SEO B1, SEO B2, and TBC BATT Fuses
IPC/DIC, LH HID, RH HID, SEO B1, SEO B2, and TBC BATT Fuses
Rear Heated Seats - 3 of 3
Ignition Switch - ACCY/RUN/START, RUN, and START Busses, IGN A and CRANK Fuses
IGN 3 Fuse - 1 of 2
IGN 3 Fuse - 1 of 2
Rear Heated Seats - 3 of 3
I/P Dimming Supply Voltage - 5 of 8
G200 2 of 3
G200 1 of 3
G200 1 of 3
Figure 2:

Heated Seats 2 of 3


Object Number: 1608431  Size: FS
Master Electrical Component List
Control Module References
Rear Heated Seats - 3 of 3
Rear Heated Seats - 1 of 3
G304 and G305
Figure 3:

Heated Seats 3 of 3


Object Number: 1608432  Size: FS
Master Electrical Component List
Control Module References
Left Rear - 1 of 4 w/ ULT
Rear Heated Seats - 2 of 3
Rear Heated Seats - 1 of 3
Rear Heated Seats - 1 of 3
I/P Dimming Supply Voltage - 5 of 8
G200 2 of 3
G200 1 of 3
G200 1 of 3
G306
Figure 4:

Left w/ULT 1 of 4


Object Number: 1608434  Size: FS
Master Electrical Component List
Heated/Cooled Seats Description and Operation
Control Module References
Left Rear - 2 of 4 w/ ULT
Rear Heated Seats - 3 of 3
Ignition Switch - ACCY/RUN/START, RUN, and START Busses, IGN A and CRANK Fuses
IGN 3 Fuse - 1 of 2
IGN 3 Fuse - 2 of 2 ULT
B+ Bus - 2 of 2
G304 and G305
Figure 5:

Left w/ULT 2 of 4


Object Number: 1608436  Size: FS
Master Electrical Component List
Heated/Cooled Seats Description and Operation
Control Module References
Left Rear - 3 of 4 w/ ULT
Left Rear - 1 of 4 w/ ULT
Ignition Switch - ACCY/RUN/START, RUN, and START Busses, IGN A and CRANK Fuses
IGN 3 Fuse - 1 of 2
IGN 3 Fuse - 2 of 2 ULT
IGN 3 Fuse - 2 of 2 ULT
G200 2 of 3
G200 2 of 3
Figure 6:

Left w/ULT 3 of 4


Object Number: 1608437  Size: FS
Master Electrical Component List
Heated/Cooled Seats Description and Operation
Control Module References
Left Rear - 4 of 4 w/ ULT
Left Rear - 2 of 4 w/ ULT
Left Rear - 4 of 4 w/ ULT
Figure 7:

Left w/ULT 4 of 4


Object Number: 1608438  Size: FS
Master Electrical Component List
Heated/Cooled Seats Description and Operation
Control Module References
Right Rear - 1 of 4 w/ ULT
Left Rear - 3 of 4 w/ ULT
Left Rear - 3 of 4 w/ ULT
Figure 8:

Right w/ULT 1 of 4


Object Number: 1608439  Size: FS
Master Electrical Component List
Heated/Cooled Seats Description and Operation
Control Module References
Right Rear - 2 of 4 w/ ULT
Left Rear - 4 of 4 w/ ULT
Ignition Switch - ACCY/RUN/START, RUN, and START Busses, IGN A and CRANK Fuses
IGN 3 Fuse - 1 of 2
IGN 3 Fuse - 2 of 2 ULT
B+ Bus - 2 of 2
G306
Figure 9:

Right w/ULT 2 of 4


Object Number: 1608440  Size: FS
Master Electrical Component List
Heated/Cooled Seats Description and Operation
Control Module References
Right Rear - 3 of 4 w/ ULT
Right Rear - 1 of 4 w/ ULT
Ignition Switch - ACCY/RUN/START, RUN, and START Busses, IGN A and CRANK Fuses
IGN 3 Fuse - 1 of 2
IGN 3 Fuse - 2 of 2 ULT
IGN 3 Fuse - 2 of 2 ULT
G200 2 of 3
G200 2 of 3
Figure 10:

Right w/ULT 3 of 4


Object Number: 1608441  Size: FS
Master Electrical Component List
Heated/Cooled Seats Description and Operation
Control Module References
Right Rear - 4 of 4 w/ ULT
Right Rear - 2 of 4 w/ ULT
Right Rear - 4 of 4 w/ ULT
Figure 11:

Right w/ULT 4 of 4


Object Number: 1608442  Size: FS
Master Electrical Component List
Heated/Cooled Seats Description and Operation
Control Module References
Right Rear - 3 of 4 w/ ULT
Right Rear - 3 of 4 w/ ULT