GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Envoy - 2WD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Engine Controls Schematics
Figure 1:

Module Power, Ground, Serial Data, and MIL
Object Number: 2081665 Size: FS
Figure 2:

Engine Data Sensors - 5-Volt and Low Reference
Object Number: 2081669 Size: FS
Figure 3:

Engine Data Sensors - MAF, Pressure and Temperature
Object Number: 2081673 Size: FS
Figure 4:

Engine Data Sensors - Oxygen Sensors
Object Number: 2081677 Size: FS
Figure 5:

Engine Data Sensors - Electronic Throttle Control
Object Number: 2081682 Size: FS
Figure 6:

Ignition Controls - Ignition Coils 1, 3, and 5
Object Number: 2081685 Size: FS
Figure 7:

Ignition Controls - Ignition Coils 2, 4, and 6
Object Number: 2081689 Size: FS
Figure 8:

Ignition Controls - Sensors
Object Number: 2081693 Size: FS
Figure 9:

Fuel Controls - Fuel Pump and Fuel Injectors
Object Number: 2081698 Size: FS
Figure 10:

Fuel Controls - EVAP Controls
Object Number: 2081703 Size: FS
Figure 11:

Device Controls - K18
Object Number: 2081707 Size: FS
Figure 12:

Controlled/Monitored Subsystem References
Object Number: 2081711 Size: FS