GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 Envoy - 2WD 🢒 Body 🢒 Wiring Systems 🢒 Passenger Seat Schematics
Figure 1:

Power Seat Controls
Object Number: 1337296 Size: FS
Master Electrical Component List
Power Seats System Description and Operation
Lumbar Controls
B+ Bus - Rear Fuse Block
Power Seat Controls w/o Memory
Lumbar Controls
G302 - 1 of 2, G303, and G304
Figure 2:

Lumbar Controls
Object Number: 1337302 Size: FS
Master Electrical Component List
Lumbar Support Description and Operation
Heat Controls
Power Seat Controls
B+ Bus - Rear Fuse Block
Power Seat Controls w/o Memory
Power Seat Controls
G302 - 1 of 2, G303, and G304
Figure 3:

Heat Controls
Object Number: 1337304 Size: FS
Master Electrical Component List
Heated Seats Description and Operation
Lumbar Controls
Right
Front Doors and Liftgate
SP306 - XUV
SP306 - Except XUV