GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 Envoy - 2WD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Heated/Cooled Seat Schematics
Figure 1:

Driver Heat Controls
Object Number: 1924133 Size: FS
Master Electrical Component List
Heated Seats Description and Operation
Control Module References
Passenger Heat Controls
Figure 2:

Passenger Heat Controls
Object Number: 1924134 Size: FS
Master Electrical Component List
Heated Seats Description and Operation
Control Module References
Driver Heat Controls