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Engine Controls Schematics

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 GMC Yukon XL, 2004 GMC Yukon, 2004 Chevrolet Tahoe, 2004 Chevrolet Suburban, and 2004 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

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

GM1227009

Courtesy of GENERAL MOTORS CORP.

Fig 2: Engine Data Sensors - Pressure, Temperature and VSS Schematic

GM1575185

Courtesy of GENERAL MOTORS CORP.

Fig 3: Engine Data Sensors - HO2S Schematic

GM1226784

Courtesy of GENERAL MOTORS CORP.

Fig 4: Engine Data Sensors - Electronic Throttle Controls Schematic (1 of 2)

GM1226793

Courtesy of GENERAL MOTORS CORP.

Fig 5: Engine Data Sensors - Electronic Throttle Controls Schematic (2 of 2)

GM1226798

Courtesy of GENERAL MOTORS CORP.

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

GM1226803

Courtesy of GENERAL MOTORS CORP.

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

GM1226805

Courtesy of GENERAL MOTORS CORP.

Fig 8: Ignition Controls - Sensors Schematic

GM1226806

Courtesy of GENERAL MOTORS CORP.

Fig 9: Fuel Controls - Fuel Pump Controls Schematic

GM1227010

Courtesy of GENERAL MOTORS CORP.

Fig 10: Fuel Controls - Fuel Injectors Schematic

GM1226808

Courtesy of GENERAL MOTORS CORP.

Fig 11: Fuel Controls - EVAP Controls, Fuel Tank Pressure and Fuel Composition Schematic

GM1226812

Courtesy of GENERAL MOTORS CORP.

Fig 12: Controlled/Monitored Subsystem References Schematic (1 of 2)

GM1227013

Courtesy of GENERAL MOTORS CORP.

Fig 13: Controlled/Monitored Subsystem References Schematic (2 of 2)

GM1227017

Courtesy of GENERAL MOTORS CORP.

Fig 14: Transmission Controls Schematic - A/T - 4L60-E

GM1226820

Courtesy of GENERAL MOTORS CORP.

Fig 15: Transmission Controls Schematic - A/T - 4L80-E

GM1226821

Courtesy of GENERAL MOTORS CORP.