Engine Controls Schematics

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Module Power, Ground, Serial Data, and MIL Schematic

GM1906822

Courtesy of GENERAL MOTORS CORP.

Fig 2: Engine Data Sensors - 5-Volt and Low Reference Schematic

GM1906825

Courtesy of GENERAL MOTORS CORP.

Fig 3: Engine Data Sensors - Pressure and Temperature Schematic

GM1906830

Courtesy of GENERAL MOTORS CORP.

Fig 4: Engine Data Sensors - Oxygen Sensors Schematic

GM1906836

Courtesy of GENERAL MOTORS CORP.

Fig 5: Engine Data Sensors - Throttle Controls Schematic

GM1906839

Courtesy of GENERAL MOTORS CORP.

Fig 6: Ignition Controls - Ignition System Coils 1, 3, 5, and 7 Schematic

GM1906843

Courtesy of GENERAL MOTORS CORP.

Fig 7: Ignition Controls - Ignition System Coils 2, 4, 6, and 8 Schematic

GM1906847

Courtesy of GENERAL MOTORS CORP.

Fig 8: Ignition Controls - Sensors and Active Fuel Management (AFM) Controls Schematic

GM1906853

Courtesy of GENERAL MOTORS CORP.

Fig 9: Fuel Controls - Fuel Pump Controls (LY6) Schematic

GM1906858

Courtesy of GENERAL MOTORS CORP.

Fig 10: Fuel Pump Flow Control Module (except LY6) Schematic

GM1922644

Courtesy of GENERAL MOTORS CORP.

Fig 11: Fuel Controls - Fuel Injectors Schematic

GM1906863

Courtesy of GENERAL MOTORS CORP.

Fig 12: Fuel Controls - EVAP Controls Schematic

GM1906867

Courtesy of GENERAL MOTORS CORP.

Fig 13: Controlled/Monitored Subsystem References Schematic

GM1906869

Courtesy of GENERAL MOTORS CORP.