LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Chevrolet
>>
2004
>>
Impala Base, 3.8 K
>>
Repair and Diagnosis
>>
External Pages
>>
Different variant/trim
>>
Section 2 (Engine Control System 3.4L (Introduction))
>>
Schematic and Routing Diagrams
>>
Engine Controls Schematics
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Engine Controls Schematics
WARNING:
This page is about a different variant/trim than selected.
Fig 1: Data Link, Grounds, MIL, and Power Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 2: 5 Volt and Low Reference Bussing Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 3: ECT, IAT, MAP, and TP Sensors Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 4: MAF and VSS Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 5: HO2S Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 6: Ignition Controls Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 7: Fuel Pump Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 8: Fuel Injectors Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 9: EVAP and FTP Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 10: EGR, and IAC Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 11: Subsystem References Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 12: A/T References Schematic
Courtesy of GENERAL MOTORS CORP.