Repair and Diagnosis

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• Quick Lookups
  • Common Specs & Procedures
    • Common Specs And Procedures
  • DTC Index
  • Electrical Component Locations
    • Component Locations - Master Electrical Component List
    • Electrical Component Locator - Door Component Views
    • Electrical Component Locator - Front Of Vehicle/Engine Compartment Component Views
    • Electrical Component Locator - Ground Views
    • Electrical Component Locator - Instrument Panel/Center Console Component Views
    • Electrical Component Locator - Luggage Compartment/Rear Of Vehicle Component Views
    • Electrical Component Locator - Passenger Compartment/Roof Component Views
    • Electrical Component Locator - Powertrain Component Views
    • Electrical Component Locator - Wheels/Vehicle Underbody Component Views
  • Fluids
  • Technical Bulletins
    • Campaigns
    • Safety Recalls
    • Technical Service Bulletins
  • Tire Fitment
  • Wiring Diagrams
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
    • Wiring Systems And Power Management - Component Connector End Views - Index
    • Wiring Systems And Power Management - Component Connector End Views - A7 To B78E CZ2
    • Wiring Systems And Power Management - Component Connector End Views - B78E Except CZ2 To K8 X1
    • Wiring Systems And Power Management - Component Connector End Views - K 8 X2 To K20 X2
    • Wiring Systems And Power Management - Component Connector End Views - K20 X2 LFX To K43 X1 NJ1
    • Wiring Systems And Power Management - Component Connector End Views - K43 X1 NJ2 To M74RR AEQ
    • Wiring Systems And Power Management - Component Connector End Views - M74RR AER To S27
    • Wiring Systems And Power Management - Component Connector End Views - S30 To X85
    • Wiring Systems And Power Management - Inline Harness Connector End Views - Index
    • Wiring Systems And Power Management - Inline Harness Connector End Views - X102 To X126
    • Wiring Systems And Power Management - Inline Harness Connector End Views - X126 CZ2/LDK To X242
    • Wiring Systems And Power Management - Inline Harness Connector End Views - X301 To X450
    • Wiring Systems And Power Management - Inline Harness Connector End Views - X500 To X915
    • Wiring Systems And Power Management - Splice Pack Connector End Views
• Accessories & Equipment
  • Anti-Theft Systems
    • Immobilizer System
    • Keyless Entry System And Remote Functions
    • Power Door Lock System And Release Systems
    • Theft Deterrent System
  • Collision/Avoidance
    • Object Detection System
  • Communication Devices
    • Data Communication System - Description And Operation
    • Data Communication System - Fastener Specifications
    • Data Communication System - Diagnostic Information And Procedures
    • Data Communication System - Repair Instructions
    • Data Communication System - Schematic Wiring Diagrams
    • Data Communication System - Special Tools And Equipment
    • Programming And Setup - All Systems
  • Cruise Control Systems
  • Drivers Assistance Systems - ADAS
    • Object Detection System
  • Entertainment Systems
    • Cellular System, Entertainment System, And Navigation System
  • Exterior Lights
    • Lighting System - Description And Operation
    • Lighting System - Diagnostic Information And Procedures
    • Lighting System - Repair Instructions
    • Lighting System - Schematic Wiring Diagrams
  • Gauges & Instrument Panels
    • Instrument Panel System Displays And Gauges
  • Headlights
    • Lighting System - Description And Operation
    • Lighting System - Diagnostic Information And Procedures
    • Lighting System - Repair Instructions
    • Lighting System - Schematic Wiring Diagrams
  • Heated Glass/Defoggers
    • Fixed And MOVEABLE Window System
  • Horns
    • Horn System
  • Ignition Switch/Steering Lock
    • Immobilizer System
    • Wiring Systems And Power Management - Repair Instructions
  • Infotainment
    • Cellular System, Entertainment System, And Navigation System
  • Interior/Exterior Trim
    • Bolted Exterior Body Panels And Closures
    • Exterior Trim
    • Floor Coverings And HEADLININGS
    • Instrument Panel And Console Trim
    • Interior Trim And Interior Paneling
    • Seat Hardware, Seat Trim, And Upholstery
  • Interior/Illumination Lights
    • Lighting System - Description And Operation
    • Lighting System - Diagnostic Information And Procedures
    • Lighting System - Repair Instructions
    • Lighting System - Schematic Wiring Diagrams
  • Memory Modules
    • Secondary And Configurable Customer Control System
  • Mirrors
    • Mirror System
  • Seats
    • Power Seat System
    • Seat Hardware, Seat Trim, And Upholstery
    • Seat Heating System And Seat Cooling System
  • Steering Column Switches
    • Secondary And Configurable Customer Control System
    • Steering Wheel And Steering Column
  • Warning Systems
    • Tire Pressure Monitoring System
  • Window Motors & Regulators
    • Fixed And MOVEABLE Window System
  • Wiper/Washer Systems
    • Wiper System And Washer System
• Body & Frame
  • Door Locks
    • Immobilizer System
    • Keyless Entry System And Remote Functions
    • Power Door Lock System And Release Systems
    • Theft Deterrent System
  • Exterior Body Panels
    • Air/Wind Noise
    • Bumpers And Fascias
    • Squeaks And Rattles
    • Water Leaks
  • Exterior/Interior Trim
    • Bolted Exterior Body Panels And Closures
    • Exterior Trim
    • Floor Coverings And HEADLININGS
    • Instrument Panel And Console Trim
    • Interior Trim And Interior Paneling
    • Seat Hardware, Seat Trim, And Upholstery
  • Frames, Subframes & Crossmembers
    • Frame And Underbody
  • Ignition Switch/Steering Lock
    • Immobilizer System
    • Wiring Systems And Power Management - Repair Instructions
  • Mirrors
    • Mirror System
  • Seats
    • Power Seat System
    • Seat Hardware, Seat Trim, And Upholstery
    • Seat Heating System And Seat Cooling System
  • Sun Roof/T-Top/Convertible Top
    • Sunroof System
  • Windows
    • Fixed And MOVEABLE Window System
• Brakes
  • Anti-Lock Brakes
    • Antilock Brake System
  • Mechanical - Hydraulic
    • Disc Brake System
    • Hydraulic Brake System
  • Parking Brake System
  • Traction Control
    • Antilock Brake System
• Drivelines & Axles
  • Axle Shafts
    • Wheel Drive Shafts
  • Differentials & Drive Axles
    • Rear Drive Axle
  • Driveshaft & Universal Joints
    • Propeller Shaft
• Electrical
  • Body Electrical
    • Battery, Charging System And Starting System - Non Hybrid
    • Component Locations - Electrical Center Identification Views - X50A To X70A X3
    • Component Locations - Electrical Center Identification Views - X50A UNDERHOOD
    • Component Locations - Master Electrical Component List
    • Electrical Component Locator - Door Component Views
    • Electrical Component Locator - Front Of Vehicle/Engine Compartment Component Views
    • Electrical Component Locator - Ground Views
    • Electrical Component Locator - Instrument Panel/Center Console Component Views
    • Electrical Component Locator - Luggage Compartment/Rear Of Vehicle Component Views
    • Electrical Component Locator - Passenger Compartment/Roof Component Views
    • Electrical Component Locator - Powertrain Component Views
    • Electrical Component Locator - Wheels/Vehicle Underbody Component Views
    • Power Outlets
    • Wiring Systems And Power Management - Description And Operation
    • Wiring Systems And Power Management - Fastener Specifications
    • Wiring Systems And Power Management - Component Connector End Views - Index
    • Wiring Systems And Power Management - Component Connector End Views - A7 To B78E CZ2
    • Wiring Systems And Power Management - Component Connector End Views - B78E Except CZ2 To K8 X1
    • Wiring Systems And Power Management - Component Connector End Views - K 8 X2 To K20 X2
    • Wiring Systems And Power Management - Component Connector End Views - K20 X2 LFX To K43 X1 NJ1
    • Wiring Systems And Power Management - Component Connector End Views - K43 X1 NJ2 To M74RR AEQ
    • Wiring Systems And Power Management - Component Connector End Views - M74RR AER To S27
    • Wiring Systems And Power Management - Component Connector End Views - S30 To X85
    • Wiring Systems And Power Management - Diagnostic Information And Procedures
    • Wiring Systems And Power Management - Inline Harness Connector End Views - Index
    • Wiring Systems And Power Management - Inline Harness Connector End Views - X102 To X126
    • Wiring Systems And Power Management - Inline Harness Connector End Views - X126 CZ2/LDK To X242
    • Wiring Systems And Power Management - Inline Harness Connector End Views - X301 To X450
    • Wiring Systems And Power Management - Inline Harness Connector End Views - X500 To X915
    • Wiring Systems And Power Management - Repair Instructions
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - Electrical Schematic Symbols
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - Ground Distribution Schematics
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - How To Use Electrical Schematics
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - Ignition Lock Schematics
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - Master Electrical Schematic Icons
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - Power Distribution Schematics
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - Power MODING Schematics
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - Schematics RPO Code List
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - Vehicle Zoning Strategy
    • Wiring Systems And Power Management - Special Tools And Equipment
    • Wiring Systems And Power Management - Splice Pack Connector End Views
    • Wiring Systems And Power Management - Wiring Harness Routing Views
  • Charging Systems
    • Battery, Charging System And Starting System - Non Hybrid
  • Component Locations
    • Component Locations - Master Electrical Component List
    • Electrical Component Locator - Door Component Views
    • Electrical Component Locator - Front Of Vehicle/Engine Compartment Component Views
    • Electrical Component Locator - Ground Views
    • Electrical Component Locator - Instrument Panel/Center Console Component Views
    • Electrical Component Locator - Luggage Compartment/Rear Of Vehicle Component Views
    • Electrical Component Locator - Passenger Compartment/Roof Component Views
    • Electrical Component Locator - Powertrain Component Views
    • Electrical Component Locator - Wheels/Vehicle Underbody Component Views
  • Fuses & Circuit Breakers
    • Component Locations - Electrical Center Identification Views - X50A To X70A X3
    • Component Locations - Electrical Center Identification Views - X50A UNDERHOOD
  • Instrument Panel System Displays And Gauges
  • Horns
    • Horn System
  • Motors, Switches, Relays
    • Battery, Charging System And Starting System - Non Hybrid
    • Component Locations - Electrical Center Identification Views - X50A To X70A X3
    • Component Locations - Electrical Center Identification Views - X50A UNDERHOOD
    • Component Locations - Master Electrical Component List
    • Electrical Component Locator - Door Component Views
    • Electrical Component Locator - Front Of Vehicle/Engine Compartment Component Views
    • Electrical Component Locator - Ground Views
    • Electrical Component Locator - Instrument Panel/Center Console Component Views
    • Electrical Component Locator - Luggage Compartment/Rear Of Vehicle Component Views
    • Electrical Component Locator - Passenger Compartment/Roof Component Views
    • Electrical Component Locator - Powertrain Component Views
    • Electrical Component Locator - Wheels/Vehicle Underbody Component Views
    • Power Outlets
    • Wiring Systems And Power Management - Description And Operation
    • Wiring Systems And Power Management - Fastener Specifications
    • Wiring Systems And Power Management - Component Connector End Views - Index
    • Wiring Systems And Power Management - Component Connector End Views - A7 To B78E CZ2
    • Wiring Systems And Power Management - Component Connector End Views - B78E Except CZ2 To K8 X1
    • Wiring Systems And Power Management - Component Connector End Views - K 8 X2 To K20 X2
    • Wiring Systems And Power Management - Component Connector End Views - K20 X2 LFX To K43 X1 NJ1
    • Wiring Systems And Power Management - Component Connector End Views - K43 X1 NJ2 To M74RR AEQ
    • Wiring Systems And Power Management - Component Connector End Views - M74RR AER To S27
    • Wiring Systems And Power Management - Component Connector End Views - S30 To X85
    • Wiring Systems And Power Management - Diagnostic Information And Procedures
    • Wiring Systems And Power Management - Inline Harness Connector End Views - Index
    • Wiring Systems And Power Management - Inline Harness Connector End Views - X102 To X126
    • Wiring Systems And Power Management - Inline Harness Connector End Views - X126 CZ2/LDK To X242
    • Wiring Systems And Power Management - Inline Harness Connector End Views - X301 To X450
    • Wiring Systems And Power Management - Inline Harness Connector End Views - X500 To X915
    • Wiring Systems And Power Management - Repair Instructions
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - Electrical Schematic Symbols
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - Ground Distribution Schematics
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - How To Use Electrical Schematics
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - Ignition Lock Schematics
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - Master Electrical Schematic Icons
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - Power Distribution Schematics
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - Power MODING Schematics
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - Schematics RPO Code List
    • Wiring Systems And Power Management - Schematic Wiring Diagrams - Vehicle Zoning Strategy
    • Wiring Systems And Power Management - Special Tools And Equipment
    • Wiring Systems And Power Management - Splice Pack Connector End Views
    • Wiring Systems And Power Management - Wiring Harness Routing Views
  • Starter
    • Battery, Charging System And Starting System - Non Hybrid
  • Wiring Diagrams
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
    • Wiring Systems And Power Management - Component Connector End Views - Index
    • Wiring Systems And Power Management - Component Connector End Views - A7 To B78E CZ2
    • Wiring Systems And Power Management - Component Connector End Views - B78E Except CZ2 To K8 X1
    • Wiring Systems And Power Management - Component Connector End Views - K 8 X2 To K20 X2
    • Wiring Systems And Power Management - Component Connector End Views - K20 X2 LFX To K43 X1 NJ1
    • Wiring Systems And Power Management - Component Connector End Views - K43 X1 NJ2 To M74RR AEQ
    • Wiring Systems And Power Management - Component Connector End Views - M74RR AER To S27
    • Wiring Systems And Power Management - Component Connector End Views - S30 To X85
    • Wiring Systems And Power Management - Inline Harness Connector End Views - Index
    • Wiring Systems And Power Management - Inline Harness Connector End Views - X102 To X126
    • Wiring Systems And Power Management - Inline Harness Connector End Views - X126 CZ2/LDK To X242
    • Wiring Systems And Power Management - Inline Harness Connector End Views - X301 To X450
    • Wiring Systems And Power Management - Inline Harness Connector End Views - X500 To X915
    • Wiring Systems And Power Management - Splice Pack Connector End Views
• Engine Mechanical
  • Cooling System (Mechanical)
    • Engine Cooling System
  • Engine Exhaust System
  • Fuel System
    • Engine Controls And Fuel - 3.6L (LFX) - Repair Instructions
  • Lubrication System
    • Maintenance And Lubrication
  • Mechanical
    • Engine Mechanical - 3.6L (LFX) - Description And Operation
    • Engine Mechanical - 3.6L (LFX) - Specifications
    • Engine Mechanical - 3.6L (LFX) - Component Locator
    • Engine Mechanical - 3.6L (LFX) - Diagnostic Information And Procedures
    • Engine Mechanical - 3.6L (LFX) - Repair Instructions - Off Vehicle
    • Engine Mechanical - 3.6L (LFX) - Repair Instructions - On Vehicle
    • Engine Mechanical - 3.6L (LFX) - Schematic Wiring Diagrams
    • Engine Mechanical - 3.6L (LFX) - Special Tools And Equipment
  • Starter
    • Battery, Charging System And Starting System - Non Hybrid
• Engine Performance
  • Emissions
    • Emission Applications
    • Emission Control Abbreviations
    • State Emission Standards - Diesel
    • State Emission Standards - Gas
  • Engine Control Systems
    • Engine Controls And Fuel - 3.6L (LFX) - Repair Instructions
  • Fuel Delivery
    • Engine Controls And Fuel - 3.6L (LFX) - Repair Instructions
  • Ignition System
    • Engine Controls And Fuel - 3.6L (LFX) - Repair Instructions
  • Mode 6 - Gm
  • Remove, Overhaul & Install
    • Engine Controls And Fuel - 3.6L (LFX) - Repair Instructions
  • Specifications
    • Firing Order & Cylinder Identification
  • System
    • Data Communication System - Diagnostic Information And Procedures
    • Engine Controls And Fuel - 3.6L (LFX) - Description And Operation
    • Engine Controls And Fuel - 3.6L (LFX) - Specifications
    • Engine Controls And Fuel - 3.6L (LFX) - DTC P0010 To DTC P0411
    • Engine Controls And Fuel - 3.6L (LFX) - DTC P0412 To DTC P2635 And Diagnostic Information And Procedures
    • Engine Controls And Fuel - 3.6L (LFX) - Schematic Wiring Diagrams
    • Engine Controls And Fuel - 3.6L (LFX) - Special Tools And Equipment
  • Testing & Diagnosis
    • Data Communication System - Diagnostic Information And Procedures
    • Engine Controls And Fuel - 3.6L (LFX) - Description And Operation
    • Engine Controls And Fuel - 3.6L (LFX) - Specifications
    • Engine Controls And Fuel - 3.6L (LFX) - DTC P0010 To DTC P0411
    • Engine Controls And Fuel - 3.6L (LFX) - DTC P0412 To DTC P2635 And Diagnostic Information And Procedures
    • Engine Controls And Fuel - 3.6L (LFX) - Schematic Wiring Diagrams
    • Engine Controls And Fuel - 3.6L (LFX) - Special Tools And Equipment
  • Tune-Up
    • Engine Controls And Fuel - 3.6L (LFX) - Repair Instructions
• General Information
  • Abbreviations
    • Commonly Used Abbreviations - General Information
    • Emission Control Abbreviations
  • Basic Trouble Shooting
    • Basic Trouble Shooting - General Information
    • Commonly Used Abbreviations - General Information
    • Emission Control Abbreviations
    • Engine Performance - Trouble Shooting - General Information
  • Brakes
    • Anti-Lock Brake Safety Precautions - General Information
    • Map - Brake Systems
    • Map - Routine Inspection Reference Guide
  • Check Lists
    • Symptom Check List Worksheet - General Information
  • Driveline/Axles
    • Drive Axle Noise Diagnosis - General Information
    • Gear Tooth Contact Patterns - General Information
    • Map - Drive Train & Transmission
    • Trouble Shooting - Clutches - General Information
  • DTC Index
  • Electrical
    • Map - Electrical Systems
    • Using lemon2025'S System Wiring Diagrams
  • Engine
    • Engine Overhaul Procedures - General Information
    • General Cooling System Service - General Information
  • Engine Performance
    • Electrostatic Discharge Warning - General Information
    • Engine Performance Diagnostic Routine Outline - General Information
    • Engine Performance Safety Precautions
    • Map - Engine Performance & Maintenance
    • Parasitic Load Explanation & Test Procedures - General Information
    • State Emission Standards - Diesel
    • State Emission Standards - Gas
    • Waveforms - Injector Pattern Tutorial - General Information
  • Map - Exhaust Systems
  • Heating, Ventilation & A/C (HVAC)
    • Map - Heating, Ventilation, & Air Conditioning
  • Hoist/Jack
    • General Information
  • Identification
    • CANADIAN Model Cross-Reference
    • General Information
  • Metric Conversions
    • Engine Displacement Conversion Table - ECAT
    • Metric Conversions
  • OEM General Information
    • Automatic Stop/Start Disable
    • Dangers, Warnings, And Cautions
    • General Information
    • Vehicle Diagnostic Information - Diagnostic Information And Procedures
    • Vehicle Diagnostic Information - Scan Tool Data - Audio Amplifier To BCM
    • Vehicle Diagnostic Information - Scan Tool Data - ECM To TCM
    • Vibration Diagnosis And Correction
  • Reset Procedures
    • ATEQ TPMS Reset Procedure
    • BARTEC TPMS Reset Procedure (1 Of 2)
    • Maintenance Reminder Light (Reset Procedures)
    • Programming And Setup - All Systems
    • Tire Pressure Monitor Systems
  • RPO Codes
    • General Information
  • Specifications Index
    • Common Specs And Procedures
  • Steering
    • Map - Steering, Suspension, Wheel Alignment, Wheels & Tires
    • Wheel Alignment Theory & Operation - General Information
  • Traction Control Disable Procedures
  • Trouble Shooting - Manual Transmission - General Information
• Heating, Ventilation & A/C (HVAC)
  • HVAC Control Systems
    • Heating, Ventilation, And Air Conditioning
    • HVAC System - Automatic
• Maintenance
  • Procedures
    • Maintenance And Lubrication
• Restraints
  • Air Bag, SRS
    • Supplemental Inflatable Restraint System
  • Restraints Control Systems
    • Seat Belt System
  • Seat Belts
    • Seat Belt System
• Steering
  • Manual Steering
    • Power Steering System
  • Power Steering System
  • Steering Wheel And Steering Column
• Suspension
  • Electronic Suspension
    • Suspension Control System - Suspension Damping
  • Front Suspension
    • Front Suspension System
    • Suspension System General Diagnosis
  • Rear Suspension
    • Rear Suspension System
    • Suspension System General Diagnosis
  • Wheel Alignment
    • BUICK Wheel Alignment Specifications - Lacrosse
    • Wheel Alignment System
  • Wheels & Tire System
    • Tire Pressure Monitoring System
    • Tires And Wheels
• Transmission
  • Automatic Trans
    • Automatic Transmission - 6T70 (M7U M7W) - Description And Operation
    • Automatic Transmission - 6T70 (M7U M7W) - Specifications
    • Automatic Transmission - 6T70 (M7U M7W) - Component Locator
    • Automatic Transmission - 6T70 (M7U M7W) - Diagnostic Information And Procedures
    • Automatic Transmission - 6T70 (M7U M7W) - Repair Instructions - Off Vehicle
    • Automatic Transmission - 6T70 (M7U M7W) - Repair Instructions - On Vehicle
    • Automatic Transmission - 6T70 (M7U M7W) - Schematic Wiring Diagrams
    • Automatic Transmission - 6T70 (M7U M7W) - Special Tools And Equipment
    • Shift Lock Control System
    • Transmission Cooling System
  • Hydraulic Diagrams
    • Automatic Transmission - 6T70 (M7U M7W) - Description And Operation
  • Transfer Case - GRAZIANO
• External Pages