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

Driver Heated Seat


Object Number: 776489  Size: FS
Master Electrical Component List
Heated Seats Description and Operation
Front Passenger Heated Seat
SEO 1, SEO 2, RR HVAC, EXP LPS, ATC, and RR WPR
4WD, HVAC 1, and IGN 3 Fuses
Parklamp Controls - 1 of 3
SEO 1, SEO 2, RR HVAC, EXP LPS, ATC, and RR WPR
G304
G304
G203 - 1 of 3
G203 - 1 of 3
G203 - 2 of 4
Figure 2:

Front Passenger Heated Seat


Object Number: 776491  Size: FS
Master Electrical Component List
Heated Seats Description and Operation
Driver Heated Seat
SEO 1, SEO 2, RR HVAC, EXP LPS, ATC, and RR WPR
SEO 1, SEO 2, RR HVAC, EXP LPS, ATC, and RR WPR
G304
G304
4WD, HVAC 1, and IGN 3 Fuses
4WD, HVAC 1, and IGN 3 Fuses
Parklamp Controls - 2 of 3
4WD, HVAC 1, and IGN 3 Fuses
G200
G200
G200