GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Envoy - 2WD 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 Starting and Charging Schematics
Figure 1:

Starting System
Object Number: 2081760 Size: FS
Figure 2:

Charging System
Object Number: 2081765 Size: FS