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Home >> Chevrolet >> 2004 >> Chevy Express H1500, Van Cargo >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Control System - 4.3L (Introduction)) >> Schematic & Routing Diagrams >> 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 & MIL Schematic
GM1247808Courtesy of GENERAL MOTORS CORP.
Fig 2: 5-Volt & Low Reference Schematic
GM1247817Courtesy of GENERAL MOTORS CORP.
Fig 3: Engine Data Sensors - Pressure, Temperature & Position Schematic
GM1247819Courtesy of GENERAL MOTORS CORP.
Fig 4: Engine Data Sensors - Oxygen Sensors Schematic
GM1247825Courtesy of GENERAL MOTORS CORP.
Fig 5: Ignition Controls Schematic
GM1247828Courtesy of GENERAL MOTORS CORP.
Fig 6: Fuel Controls - Fuel Pump Controls Schematic
GM1247830Courtesy of GENERAL MOTORS CORP.
Fig 7: Fuel Controls - Fuel Injectors Schematic
GM1247835Courtesy of GENERAL MOTORS CORP.
Fig 8: Fuel Controls - EVAP & Device Controls Schematic
GM1247838Courtesy of GENERAL MOTORS CORP.
Fig 9: Controlled/Monitored Subsystem & Transmission References Schematic
GM1247841Courtesy of GENERAL MOTORS CORP.