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

6-Way Left Power Seat


Object Number: 885728  Size: FS
Master Electrical Component List
Power Seats System Description and Operation
6-way Right Power Seat
POWER SEATS, POWER WINDOW Circuit Breakers and RAP Relay
POWER SEATS, POWER WINDOW Circuit Breakers and RAP Relay
POWER SEATS, POWER WINDOW Circuit Breakers and RAP Relay
S313 and S419
G420, G450 and S427 - Utility and Crew Cab
Figure 2:

6-Way Right Power Seat


Object Number: 755936  Size: FS
Master Electrical Component List
Power Seats System Description and Operation
8-way Left Power Seat
6-way Left Power Seat
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 - Utility and Crew Cab
Figure 3:

8-Way Left Power Seat


Object Number: 885737  Size: FS
Master Electrical Component List
Power Seats System Description and Operation
8-way Right Power Seat
6-way Right Power Seat
POWER SEATS, POWER WINDOW Circuit Breakers and RAP Relay
POWER SEATS, POWER WINDOW Circuit Breakers and RAP Relay
S313 and S419
G420, G450 and S427 - Utility and Crew Cab
Figure 4:

8-Way Right Power Seat


Object Number: 755938  Size: FS
Master Electrical Component List
Power Seats System Description and Operation
8-way Left Power Seat
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 - Utility and Crew Cab