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Engine Controls Schematics

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. 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

GM1232923

Courtesy of GENERAL MOTORS CORP.

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

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Courtesy of GENERAL MOTORS CORP.

Fig 3: Engine Data Sensors Schematic - HO2S

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Courtesy of GENERAL MOTORS CORP.

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

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Courtesy of GENERAL MOTORS CORP.

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

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Courtesy of GENERAL MOTORS CORP.

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

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Courtesy of GENERAL MOTORS CORP.

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

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Courtesy of GENERAL MOTORS CORP.

Fig 8: Ignition Controls - Sensors

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Courtesy of GENERAL MOTORS CORP.

Fig 9: Fuel Controls - Fuel Pump Controls Schematic

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Courtesy of GENERAL MOTORS CORP.

Fig 10: Fuel Controls - Fuel Injectors Schematic

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Courtesy of GENERAL MOTORS CORP.

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

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Courtesy of GENERAL MOTORS CORP.

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

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Courtesy of GENERAL MOTORS CORP.

Fig 13: Controlled/Monitored Subsystem References Schematic - 2 of 2

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Courtesy of GENERAL MOTORS CORP.

Fig 14: Transmission Controls Schematic - A/T

GM1232946

Courtesy of GENERAL MOTORS CORP.