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

6-Way Power Seat


Object Number: 755936  Size: FS
Master Electrical Component List
Power Seats System Description and Operation
8 Way Power Seats
POWER SEATS, POWER WINDOW Circuit Breakers and RAP Relay
POWER SEATS, POWER WINDOW Circuit Breakers and RAP Relay
S320 and S420
G420, G450 and S427
Figure 2:

8-Way Power Seat


Object Number: 755938  Size: FS
Master Electrical Component List
Power Seats System Description and Operation
Lumbar and Heat Controls
6-Way Power Seat
POWER SEATS, POWER WINDOW Circuit Breakers and RAP Relay
POWER SEATS, POWER WINDOW Circuit Breakers and RAP Relay
G420, G450 and S427
S320 and S420
Figure 3:

Lumbar and Heat Controls


Object Number: 755944  Size: FS
Master Electrical Component List
Power Seats System Description and Operation
8 Way Power Seats
HTD SEAT, ATC, HVAC and A/C Fuses
Ign RUN and START Bus Bar
HVAC and CRUISE Fuses
HVAC and CRUISE Fuses
HTD SEAT, ATC, HVAC and A/C Fuses
S320 and S420
G420, G450 and S427