LEMON Manuals
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2009
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Envoy 5.3 M, 4WD
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Section 1 (Engine Control System & Fuel System - 4.2L - Introduction)
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Schematic and Routing Diagrams
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Engine Controls Schematics
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Engine Controls Schematics
WARNING:
This page is about a different variant/trim than selected.
Fig 1: Module Power, Ground, Serial Data, and MIL
Courtesy of GENERAL MOTORS CORP.
Fig 2: Engine Data Sensors - 5-Volt and Low Reference
Courtesy of GENERAL MOTORS CORP.
Fig 3: Engine Data Sensors - MAF, Pressure and Temperature
Courtesy of GENERAL MOTORS CORP.
Fig 4: Engine Data Sensors - Oxygen Sensors
Courtesy of GENERAL MOTORS CORP.
Fig 5: Engine Data Sensors - Electronic Throttle Control
Courtesy of GENERAL MOTORS CORP.
Fig 6: Ignition Controls - Ignition Coils 1, 3, and 5
Courtesy of GENERAL MOTORS CORP.
Fig 7: Ignition Controls - Ignition Coils 2, 4, and 6
Courtesy of GENERAL MOTORS CORP.
Fig 8: Ignition Controls - Sensors
Courtesy of GENERAL MOTORS CORP.
Fig 9: Fuel Controls - Fuel Pump and Fuel Injectors
Courtesy of GENERAL MOTORS CORP.
Fig 10: Fuel Controls - EVAP Controls
Courtesy of GENERAL MOTORS CORP.
Fig 11: Device Controls - K18
Courtesy of GENERAL MOTORS CORP.
Fig 12: Controlled/Monitored Subsystem References
Courtesy of GENERAL MOTORS CORP.