GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Silverado - 2WD 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 Power Moding Schematics
Figure 1:

Ignition I Voltage and 12-Volt Reference
Object Number: 2065107 Size: FS
Figure 2:

Ignition II/III Voltage
Object Number: 2065109 Size: FS
Figure 3:

Ignition III Voltage and Accessory Voltage
Object Number: 2065111 Size: FS