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Engine Controls Schematics

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

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

GM1248033

Courtesy of GENERAL MOTORS CORP.

Fig 2: 5-Volt and Low Reference Schematic

GM1248035

Courtesy of GENERAL MOTORS CORP.

Fig 3: Engine Data Sensors - Pressure and Temperature Schematic

GM1248036

Courtesy of GENERAL MOTORS CORP.

Fig 4: Engine Data Sensors Schematic - Oxygen Sensors

GM1248037

Courtesy of GENERAL MOTORS CORP.

Fig 5: Engine Data Sensors Schematic - Throttle Actuator Controls and VSS

GM1248039

Courtesy of GENERAL MOTORS CORP.

Fig 6: Ignition Controls Schematic - Ignition System

GM1248041

Courtesy of GENERAL MOTORS CORP.

Fig 7: Ignition Controls Schematic - Sensors

GM1248045

Courtesy of GENERAL MOTORS CORP.

Fig 8: Fuel Controls Schematic - Fuel Pump Controls and Fuel Injectors

GM1248048

Courtesy of GENERAL MOTORS CORP.

Fig 9: Fuel Controls Schematic - EVAP Controls

GM1248053

Courtesy of GENERAL MOTORS CORP.

Fig 10: Device Controls (K18) Schematic

GM1248055

Courtesy of GENERAL MOTORS CORP.

Fig 11: Controlled/Monitored Subsystem References Schematic

GM1248057

Courtesy of GENERAL MOTORS CORP.

Fig 12: Transmission Control References Schematic - A/T

GM1248061

Courtesy of GENERAL MOTORS CORP.