LaCrosse V6-3.8L (2009): Powertrain Management

Also for this vehicle: LaCrosse AWD V6-3.0L (2010), LaCrosse FWD L4-2.4L (2011), LaCrosse FWD V6-3.0L (2010), LaCrosse V6-3.6L (2007), LaCrosse V6-3.6L VIN 7 (2006), LaCrosse V6-3.8L VIN 2 (2005), LaCrosse V8-5.3L (2008).

Diagnostics Maintenance Engine Transmission Brakes Electrical Steering & suspension Heating & A/C Body & interior

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01Relays and Modules Relays and Modules: Sections
02Sensors and Switches Sensors and Switches: Sections
03Maintenance Maintenance: Sections
04Engine, Cooling and Exhaust Engine, Cooling and Exhaust: Sections
05Powertrain Management Powertrain Management: Sections
- Relays and Modules - Powertrain Management28 pages
  - Relays and Modules - Computers and Control Systems18 pages
    Body Control Module › Component Information › Locations2 3 4 5 6 7 8 9 10 11
    Engine Control Module › Component Information › Technical Service Bulletins › Engine Controls - Aftermarket Accessory Usage2 3 4 5 6
    Main Relay (Computer/Fuel System) › Component Information › Locations
  - Relays and Modules - Emission Control Systems › Air Injection Pump Relay › Component Information › Diagrams2
  - Relays and Modules - Fuel Delivery and Air Induction2 pages
    Fuel Pump Relay › Component Information › Locations
    Main Relay (Computer/Fuel System) › Component Information › Locations
  - Relays and Modules - Ignition System6 pages
    Ignition Control Module › Component Information › Locations2 3 4 5
    Ignition Relay › Component Information › Locations
- Sensors and Switches - Powertrain Management110 pages
  - Sensors and Switches - Computers and Control Systems77 pages
    Accelerator Pedal Position Sensor › Component Information › Locations2 3 4
    Air Flow Meter/Sensor › Component Information › Locations2 3 4
    Barometric Pressure Sensor › Component Information › Service and Repair2
    Battery Current Sensor › Component Information › Diagrams2 3
    Camshaft Position Sensor › Component Information › Locations2 3 4 5
    Coolant Temperature Sensor/Switch (For Computer) › Component Information › Locations2 3
    Crankshaft Position Sensor › Component Information5 pages
    Locations2
    Service and Repair › Crankshaft Position Sensor Replacement2 3
    Fuel Level Sensor › Component Information › Service and Repair › Fuel Level Sensor Replacement2 3 4 5 6 7 8
    Fuel Tank Pressure Sensor › Component Information5 pages
    Locations2
    Service and Repair › Fuel Tank Pressure Sensor Replacement (NT7)2 3
    Intake Air Temperature Sensor › Component Information › Locations2 3 4
    Knock Sensor › Component Information6 pages
    Locations2 3
    Service and Repair › Knock Sensor 1 Replacement2 3
    Manifold Pressure/Vacuum Sensor › Component Information › Locations2 3 4 5 6 7 8
    Oil Pressure Sensor › Component Information › Diagrams2
    Oxygen Sensor › Component Information14 pages
    Locations2 3 4 5 6 7
    Service Precautions › Heated Oxygen and Oxygen Sensor Caution2 3
    Service and Repair › Heated Oxygen Sensor Replacement - Sensor 12 3 4
    Vehicle Speed Sensor › Component Information › Locations2 3 4
  - Sensors and Switches - Fuel Delivery and Air Induction8 pages
    Accelerator Pedal Position Sensor › Component Information › Locations2 3 4
    Air Flow Meter/Sensor › Component Information › Locations2 3 4
  - Sensors and Switches - Ignition System25 pages
    Camshaft Position Sensor › Component Information › Locations2 3 4 5
    Crankshaft Position Sensor › Component Information5 pages
    Locations2
    Service and Repair › Crankshaft Position Sensor Replacement2 3
    Ignition Switch › Ignition Switch Lock Cylinder › Component Information › Service and Repair9 pages
    Procedures2 3
    Removal and Replacement › Ignition Lock Cylinder Control Solenoid Replacement2 3 4 5 6
    Knock Sensor › Component Information6 pages
    Locations2 3
    Service and Repair › Knock Sensor 1 Replacement2 3
- Tune-up and Engine Performance Checks26 pages
- Computers and Control Systems407 pages
  - Accelerator Pedal Position Sensor › Component Information › Locations2 3 4
  - Air Flow Meter/Sensor › Component Information › Locations2 3 4
  - Intake Air Temperature Sensor › Component Information › Locations2 3 4
  - Barometric Pressure Sensor › Component Information › Service and Repair2
  - Battery Current Sensor › Component Information › Diagrams2 3
  - Body Control Module › Component Information › Locations2 3 4 5 6 7 8 9 10 11
  - Camshaft Position Sensor › Component Information › Locations2 3 4 5
  - Coolant Temperature Sensor/Switch (For Computer) › Component Information › Locations2 3
  - Crankshaft Position Sensor › Component Information5 pages
    Locations2
    Service and Repair › Crankshaft Position Sensor Replacement2 3
  - Data Link Connector › Component Information › Locations › Harness Routing Views2 3
  - Electronic Throttle Actuator › Component Information › Description and Operation2
  - Engine Control Module › Component Information › Technical Service Bulletins › Engine Controls - Aftermarket Accessory Usage2 3 4 5 6
  - Fuel Level Sensor › Component Information › Service and Repair › Fuel Level Sensor Replacement2 3 4 5 6 7 8
  - Fuel Tank Pressure Sensor › Component Information5 pages
    Locations2
    Service and Repair › Fuel Tank Pressure Sensor Replacement (NT7)2 3
  - Information Bus › Component Information210 pages
    Diagrams198 pages
    Diagram Information and Instructions › Master Electrical Schematic Icons2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20…46
    Diagnostic Aids152 pages
    Arrows and Symbols2 3
    General Electrical Diagnostic Procedures149 pages
    Checking Aftermarket Accessories
    Circuit Testing › Circuit Testing2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
    Connector Repairs › AFL/ECP Connectors2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20…107
    Wiring Repairs › Circuit Protection - Circuit Breakers2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
    Testing and Inspection12 pages
    Initial Inspection and Diagnostic Overview › Diagnostic Starting Point - Data Communications2
    Symptom Related Diagnostic Procedures › Symptoms - Data Communications2 3 4 5 6 7 8 9 10
  - Knock Sensor › Component Information6 pages
    Locations2 3
    Service and Repair › Knock Sensor 1 Replacement2 3
  - Main Relay (Computer/Fuel System) › Component Information › Locations
  - Malfunction Indicator Lamp › Component Information › Testing and Inspection2
  - Manifold Pressure/Vacuum Sensor › Component Information › Locations2 3 4 5 6 7 8
  - Oil Pressure Sensor › Component Information › Diagrams2
  - Oxygen Sensor › Component Information14 pages
    Locations2 3 4 5 6 7
    Service Precautions › Heated Oxygen and Oxygen Sensor Caution2 3
    Service and Repair › Heated Oxygen Sensor Replacement - Sensor 12 3 4
  - Relays and Modules - Computers and Control Systems18 pages
    Body Control Module › Component Information › Locations2 3 4 5 6 7 8 9 10 11
    Engine Control Module › Component Information › Technical Service Bulletins › Engine Controls - Aftermarket Accessory Usage2 3 4 5 6
    Main Relay (Computer/Fuel System) › Component Information › Locations
  - Sensors and Switches - Computers and Control Systems77 pages
    Accelerator Pedal Position Sensor › Component Information › Locations2 3 4
    Air Flow Meter/Sensor › Component Information › Locations2 3 4
    Barometric Pressure Sensor › Component Information › Service and Repair2
    Battery Current Sensor › Component Information › Diagrams2 3
    Camshaft Position Sensor › Component Information › Locations2 3 4 5
    Coolant Temperature Sensor/Switch (For Computer) › Component Information › Locations2 3
    Crankshaft Position Sensor › Component Information5 pages
    Locations2
    Service and Repair › Crankshaft Position Sensor Replacement2 3
    Fuel Level Sensor › Component Information › Service and Repair › Fuel Level Sensor Replacement2 3 4 5 6 7 8
    Fuel Tank Pressure Sensor › Component Information5 pages
    Locations2
    Service and Repair › Fuel Tank Pressure Sensor Replacement (NT7)2 3
    Intake Air Temperature Sensor › Component Information › Locations2 3 4
    Knock Sensor › Component Information6 pages
    Locations2 3
    Service and Repair › Knock Sensor 1 Replacement2 3
    Manifold Pressure/Vacuum Sensor › Component Information › Locations2 3 4 5 6 7 8
    Oil Pressure Sensor › Component Information › Diagrams2
    Oxygen Sensor › Component Information14 pages
    Locations2 3 4 5 6 7
    Service Precautions › Heated Oxygen and Oxygen Sensor Caution2 3
    Service and Repair › Heated Oxygen Sensor Replacement - Sensor 12 3 4
    Vehicle Speed Sensor › Component Information › Locations2 3 4
  - Vehicle Speed Sensor › Component Information › Locations2 3 4
- Emission Control Systems46 pages
  - Air Injection14 pages
    Air Injection Control Valve › Component Information7 pages
    Diagrams
    Service and Repair › Secondary Air Injection Shut-Off Valve Outlet Pipe/Hose Replacement2 3 4 5 6
    Air Injection Pump › Component Information › Diagrams2 3 4 5
    Air Injection Pump Relay › Component Information › Diagrams2
  - Catalytic Converter › Catalyst Shield › Component Information › Service and Repair2
  - Evaporative Emissions System17 pages
    Canister Purge Solenoid › Component Information › Diagrams2 3
    Evaporative Emission Control Canister › Canister Vent Valve › Component Information › Diagrams2
    Evaporative Emissions Hose › Component Information › Service and Repair › Evaporative Emission Line Replacement - Canister to Tank2 3 4 5 6 7 8 9 10 11 12
  - Exhaust Gas Recirculation9 pages
    EGR Tube › Component Information › Service and Repair › Exhaust Gas Recirculation Inlet Pipe Replacement2 3 4 5 6
    EGR Valve › Component Information › Diagrams2 3
  - Positive Crankcase Ventilation › Positive Crankcase Ventilation Valve › Component Information › Service and Repair2
  - Relays and Modules - Emission Control Systems › Air Injection Pump Relay › Component Information › Diagrams2
- Fuel Delivery and Air Induction105 pages
  - Fuel Pressure › System Information › Specifications2 3 4
  - Fuel Pressure Release › System Information › Service and Repair › Fuel Pressure Gage Installation and Removal2 3 4 5
  - Accelerator Pedal Position Sensor › Component Information › Locations2 3 4
  - Air Cleaner Housing4 pages
    Air Cleaner Fresh Air Duct/Hose › Component Information › Service and Repair2
    Air Filter Element › Component Information › Service and Repair2
  - Air Flow Meter/Sensor › Component Information › Locations2 3 4
  - Fuel › Component Information › Technical Service Bulletins › Fuel - GM's Position on Use of E 15 in 2007 Newer M.Y.2 3 4 5 6
  - Fuel Filter › Fuel Pressure Release › System Information › Service and Repair › Fuel Pressure Gage Installation and Removal2 3 4 5
  - Fuel Injector › Component Information26 pages
    Technical Service Bulletins13 pages
    Customer Interest: › 03-06-04-030G2 3 4 5
    All Technical Service Bulletins: › 03-06-04-030G2 3 4 5
    All Other Service Bulletins for Fuel Injector: › 08-09-41-002F2 3
    All Other Service Bulletins for Fuel Injector: › 08-09-41-002F
    Specifications › Electrical Specifications2
    Testing and Inspection › Fuel Injector Diagnosis (w/CH47976)2 3 4 5
    Service and Repair6 pages
    Procedures2
    Removal and Replacement › Fuel Injector Sight Shield Replacement2 3 4
  - Fuel Line Coupler › Component Information › Service and Repair › Metal Collar Quick Connect Fitting Service2 3 4 5 6 7
  - Fuel Pressure Regulator › Component Information › Service and Repair2
  - Fuel Pump5 pages
    Fuel Pressure › System Information › Specifications2 3 4
    Fuel Pump Relay › Component Information › Locations
  - Fuel Rail › Component Information › Service and Repair2 3
  - Fuel Tank9 pages
    Fuel Filler Hose › Component Information › Service and Repair2
    Fuel Filler Neck › Component Information › Service and Repair2
    Fuel Gauge Sender › Component Information › Service and Repair2 3 4 5
  - Fuel Tank Unit › Component Information › Diagrams2 3 4 5 6
  - Main Relay (Computer/Fuel System) › Component Information › Locations
  - Relays and Modules - Fuel Delivery and Air Induction2 pages
    Fuel Pump Relay › Component Information › Locations
    Main Relay (Computer/Fuel System) › Component Information › Locations
  - Sensors and Switches - Fuel Delivery and Air Induction8 pages
    Accelerator Pedal Position Sensor › Component Information › Locations2 3 4
    Air Flow Meter/Sensor › Component Information › Locations2 3 4
  - Throttle Body › Component Information4 pages
    Diagrams
    Service and Repair › Procedures2 3
- Ignition System65 pages
  - Firing Order › Component Information › Specifications
  - Camshaft Position Sensor › Component Information › Locations2 3 4 5
  - Crankshaft Position Sensor › Component Information5 pages
    Locations2
    Service and Repair › Crankshaft Position Sensor Replacement2 3
  - Ignition Cable › Component Information › Testing and Inspection2 3 4
  - Ignition Coil › Component Information › Service and Repair
  - Ignition Control Module › Component Information › Locations2 3 4 5
  - Ignition Relay › Component Information › Locations
  - Knock Sensor › Component Information6 pages
    Locations2 3
    Service and Repair › Knock Sensor 1 Replacement2 3
  - Relays and Modules - Ignition System6 pages
    Ignition Control Module › Component Information › Locations2 3 4 5
    Ignition Relay › Component Information › Locations
  - Sensors and Switches - Ignition System25 pages
    Camshaft Position Sensor › Component Information › Locations2 3 4 5
    Crankshaft Position Sensor › Component Information5 pages
    Locations2
    Service and Repair › Crankshaft Position Sensor Replacement2 3
    Ignition Switch › Ignition Switch Lock Cylinder › Component Information › Service and Repair9 pages
    Procedures2 3
    Removal and Replacement › Ignition Lock Cylinder Control Solenoid Replacement2 3 4 5 6
    Knock Sensor › Component Information6 pages
    Locations2 3
    Service and Repair › Knock Sensor 1 Replacement2 3
  - Spark Plug › Component Information › Specifications2 3 4 5 6
- Transmission Control Systems426 pages
  - Actuators and Solenoids - Transmission and Drivetrain › Actuators and Solenoids - A/T410 pages
    Pressure Regulating Solenoid, A/T › Component Information › Diagrams2
    Shift Interlock Solenoid › Component Information › Locations2 3 4 5
    Shift Solenoid, A/T › Component Information200 pages
    Diagrams198 pages
    Diagram Information and Instructions › Master Electrical Schematic Icons2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20…46
    Diagnostic Aids152 pages
    Arrows and Symbols2 3
    General Electrical Diagnostic Procedures149 pages
    Checking Aftermarket Accessories
    Circuit Testing › Circuit Testing2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
    Connector Repairs › AFL/ECP Connectors2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20…107
    Wiring Repairs › Circuit Protection - Circuit Breakers2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
    Service and Repair › 1-2 Shift Solenoid Valve Replacement2
    Torque Converter Clutch Solenoid, A/T › Component Information203 pages
    Diagrams198 pages
    Diagram Information and Instructions › Master Electrical Schematic Icons2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20…46
    Diagnostic Aids152 pages
    Arrows and Symbols2 3
    General Electrical Diagnostic Procedures149 pages
    Checking Aftermarket Accessories
    Circuit Testing › Circuit Testing2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
    Connector Repairs › AFL/ECP Connectors2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20…107
    Wiring Repairs › Circuit Protection - Circuit Breakers2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
    Service and Repair › Torque Converter Clutch Pulse Width Modulation Solenoid Valve Replacement2 3 4 5
  - Relays and Modules - Transmission and Drivetrain › Relays and Modules - A/T2 pages
    Control Module, A/T › Component Information › Service and Repair
    Transmission Control System Relay, A/T › Component Information › Locations
  - Sensors and Switches - Transmission and Drivetrain › Sensors and Switches - A/T14 pages
    Fluid Pressure Sensor/Switch, A/T › Component Information › Locations2 3 4
    Transmission Mode Switch, A/T › Component Information › Locations2
    Transmission Speed Sensor, A/T › Component Information › Locations2 3
    Transmission Temperature Sensor/Switch, A/T › Component Information5 pages
    Locations2
    Service and Repair › Fluid Temperature Sensor Replacement2 3
- PROM - Programmable Read Only Memory › Component Information › Technical Service Bulletins › Engine/Transmission - Aftermarket Calibrations2 3 4
06Transmission and Drivetrain Transmission and Drivetrain: Sections
07Brakes and Traction Control Brakes and Traction Control: Sections
08Starting and Charging Starting and Charging: Sections
09Power and Ground Distribution Power and Ground Distribution: Sections
10Steering and Suspension Steering and Suspension: Sections
11Heating and Air Conditioning Heating and Air Conditioning: Sections
12Restraint Systems Restraint Systems: Sections
13Accessories and Optional Equipment Accessories and Optional Equipment: Sections
14Body and Frame Body and Frame: Sections
15Cruise Control Cruise Control: Sections
16Instrument Panel, Gauges and Warning Indicators Instrument Panel, Gauges and Warning Indicators: Sections
17Lighting and Horns Lighting and Horns: Sections
18Windows and Glass Windows and Glass: Sections
19Wiper and Washer Systems Wiper and Washer Systems: Sections