GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Sierra Denali 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 Engine Controls Schematics
Figure 1:

Module Power, Ground, Serial Data and MIL
Object Number: 2064856 Size: FS
Figure 2:

Engine Data Sensors - 5-Volt and Low References - 1 of 2
Object Number: 2064858 Size: FS
Figure 3:

Engine Data Sensors - 5-Volt and Low References - 2 of 2
Object Number: 2064860 Size: FS
Figure 4:

Engine Data Sensors - Temperature and MAF
Object Number: 2064862 Size: FS
Figure 5:

Engine Data Sensors - Pressure
Object Number: 2064864 Size: FS
Figure 6:

EGR and Turbocharger Controls
Object Number: 2064868 Size: FS
Figure 7:

Pedal Position and Injector Timing
Object Number: 2064870 Size: FS
Figure 8:

Engine Data Sensors - Glow Plug Controls and Intake Air Heater
Object Number: 2064872 Size: FS
Figure 9:

Fuel Controls - Fuel Pump, Temperature and Pressure Controls
Object Number: 2064876 Size: FS
Figure 10:

Fuel Controls - Fuel Injectors
Object Number: 2064879 Size: FS
Figure 11:

Controlled/Monitored Subsystem References
Object Number: 2064881 Size: FS