April 5, 2026: LEMON Manuals is launched! Read the announcement.

Engine Controls Schematics

Fig 1: Data Link, Grounds, MIL, and Power Schematic

GM796877

Courtesy of GENERAL MOTORS CORP.

Fig 2: 5 Volt and Low Reference Bussing Schematic

GM785441

Courtesy of GENERAL MOTORS CORP.

Fig 3: ECT, IAT, MAP, and TP Sensors Schematic

GM1284571

Courtesy of GENERAL MOTORS CORP.

Fig 4: MAF and VSS Schematic

GM885056

Courtesy of GENERAL MOTORS CORP.

Fig 5: HO2S Schematic

GM784626

Courtesy of GENERAL MOTORS CORP.

Fig 6: Ignition Controls Schematic

GM651831

Courtesy of GENERAL MOTORS CORP.

Fig 7: Fuel Pump Schematic

GM1346861

Courtesy of GENERAL MOTORS CORP.

Fig 8: Fuel Injectors Schematic

GM798540

Courtesy of GENERAL MOTORS CORP.

Fig 9: EVAP and FTP Schematic

GM784628

Courtesy of GENERAL MOTORS CORP.

Fig 10: EGR, and IAC Schematic

GM885062

Courtesy of GENERAL MOTORS CORP.

Fig 11: Subsystem References Schematic

GM1247009

Courtesy of GENERAL MOTORS CORP.

Fig 12: A/T References Schematic

GM885065

Courtesy of GENERAL MOTORS CORP.