HUMMER 2010 Hummer H3 Base

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Repair and Diagnosis

Quick Lookups
- Common Specs & Procedures
  - Common Specs & Procedures
- DTC Index
  - Ordered Diagnostic Trouble Codes
- Electrical Component Locations
  - Component Locations - Door Component Views
  - Component Locations - Electrical Center Identification Views
  - Component Locations - Front Of Vehicle/Engine Compartment Component Views
  - Component Locations - Ground Views
  - Component Locations - Instrument Panel/Center Console Compartment Views
  - Component Locations - Luggage Compartment/Rear Of Vehicle Component Views
  - Component Locations - Master Electrical Component List
  - Component Locations - Passenger Compartment/Roof Component Views
  - Component Locations - Powertrain Component Views
  - Component Locations - Wheels/Vehicle Underbody Compartment Views
  - Electrical Component Locator
- Fluids
- Technical Bulletins
- Tire Fitment
- Wiring Diagrams
  - Automatic Transmission - 4L60-E/4L65-E/4L70-E - Schematic And Routing Diagrams
  - Engine Controls And Fuel - 3.7L - Schematic And Routing 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 - 1 Through C
  - Wiring Systems And Power Management - Component Connector End Views - D Through E
  - Wiring Systems And Power Management - Component Connector End Views - F Through H
  - Wiring Systems And Power Management - Component Connector End Views - I Through O
  - Wiring Systems And Power Management - Component Connector End Views - P Through R
  - Wiring Systems And Power Management - Component Connector End Views - S
  - Wiring Systems And Power Management - Component Connector End Views - T Through Z
  - Wiring Systems And Power Management - Inline Harness Connector End Views - X101 Through X374
  - Wiring Systems And Power Management - Inline Harness Connector End Views - X410 Through X901
  - Wiring Systems And Power Management - Schematic And Routing Diagrams
Accessories & Equipment
- Anti-Theft Systems
  - Immobilizer
  - Remote Functions
  - Theft Deterrent
  - Vehicle Access
- Body Interior
  - Secondary And Configurable Customer Controls
- Collision/Avoidance
  - Object Detection
- Communication Devices
  - Data Communications
  - Programming And Setup
- Cruise Control Systems
  - Schematic and Routing Diagrams
  - Diagnostic Information and Procedures
  - Repair Instructions
  - Description and Operation
- Drivers Assistance Systems - ADAS
  - Object Detection
- Entertainment Systems
  - Cellular, Entertainment, And Navigation
- Exterior Lights
  - Lighting
- Gauges & Instrument Panels
  - Displays And Gauges
  - Instrument Panel And Console Trim
- Headlights
  - Lighting
- Heated Glass/Defoggers
  - Fixed And MOVEABLE Windows
- Horns
  - Specifications
  - Schematic and Routing Diagrams
  - Diagnostic Information and Procedures
  - Repair Instructions
  - Description and Operation
- Ignition Switch/Steering Lock
  - Immobilizer
  - Wiring Systems And Power Management - Diagnostic Information And Procedures
  - Wiring Systems And Power Management - Repair Instructions
- Infotainment
  - Cellular, Entertainment, And Navigation
- Interior/Exterior Trim
  - Bolted Exterior Body Panels And Closures
  - Exterior Trim
  - Floor Coverings And HEADLININGS
  - Instrument Panel And Console Trim
  - Interior Trim And Paneling
  - Luggage Rack And Roof Trim
  - Seat Hardware, Trim, And Upholstery
- Interior/Illumination Lights
  - Lighting
- Memory Modules
  - Secondary And Configurable Customer Controls
- Mirrors
  - Specifications
  - Schematic and Routing Diagrams
  - Diagnostic Information and Procedures
  - Repair Instructions
  - Description and Operation
- Seats
  - Power Seats
  - Seat Hardware, Trim, And Upholstery
  - Seat Heating And Cooling
- Steering Column Switches
  - Secondary And Configurable Customer Controls
  - Steering Wheel And Column
- Warning Systems
  - Tire Pressure Monitoring
- Window Motors & Regulators
  - Fixed And MOVEABLE Windows
- Wiper/Washer Systems
  - Wipers And Washers
Body & Frame
- Body, Cab Control Systems
  - Secondary And Configurable Customer Controls
- Door Locks
  - Immobilizer
  - Remote Functions
  - Theft Deterrent
  - Vehicle Access
- Exterior Body Panels
  - Air/Wind Noise
  - Bumpers And Fascias
  - Plastic Panel Information And Repair
  - 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 Paneling
  - Luggage Rack And Roof Trim
  - Seat Hardware, Trim, And Upholstery
- Frames, Subframes & Crossmembers
  - Frame And Underbody
- Ignition Switch/Steering Lock
  - Immobilizer
  - Wiring Systems And Power Management - Diagnostic Information And Procedures
  - Wiring Systems And Power Management - Repair Instructions
- Mirrors
  - Specifications
  - Schematic and Routing Diagrams
  - Diagnostic Information and Procedures
  - Repair Instructions
  - Description and Operation
- Seats
  - Power Seats
  - Seat Hardware, Trim, And Upholstery
  - Seat Heating And Cooling
- Sun Roof/T-Top/Convertible Top
  - Sunroof
- Fixed And MOVEABLE Windows
  - Specifications
  - Schematic and Routing Diagrams
  - Diagnostic Information and Procedures
  - Repair Instructions
  - Description and Operation
  - Special Tools and Equipment
Brakes
- Anti-Lock Brakes
  - Antilock Brake System With TCS And VSES
- Mechanical - Hydraulic
  - Disc Brakes
  - Hydraulic Brakes
- Parking Brake System
  - Park Brake
- Traction Control
  - Antilock Brake System With TCS And VSES
Drivelines & Axles
- Axle Shafts
  - Wheel Drive Shafts
- Differentials & Drive Axles
  - Front Drive Axle
  - Rear Drive Axle
- Driveshaft & Universal Joints
  - Propeller Shaft
Electrical
- Body Electrical
  - Component Locations - Door Component Views
  - Component Locations - Electrical Center Identification Views
  - Component Locations - Front Of Vehicle/Engine Compartment Component Views
  - Component Locations - Ground Views
  - Component Locations - Instrument Panel/Center Console Compartment Views
  - Component Locations - Luggage Compartment/Rear Of Vehicle Component Views
  - Component Locations - Master Electrical Component List
  - Component Locations - Passenger Compartment/Roof Component Views
  - Component Locations - Powertrain Component Views
  - Component Locations - Wheels/Vehicle Underbody Compartment Views
  - Power Outlets
  - Wiring Systems And Power Management - Component Connector End Views - Index
  - Wiring Systems And Power Management - Component Connector End Views - 1 Through C
  - Wiring Systems And Power Management - Component Connector End Views - D Through E
  - Wiring Systems And Power Management - Component Connector End Views - F Through H
  - Wiring Systems And Power Management - Component Connector End Views - I Through O
  - Wiring Systems And Power Management - Component Connector End Views - P Through R
  - Wiring Systems And Power Management - Component Connector End Views - S
  - Wiring Systems And Power Management - Component Connector End Views - T Through Z
  - Wiring Systems And Power Management - Description And Operation
  - Wiring Systems And Power Management - Diagnostic Information And Procedures
  - Wiring Systems And Power Management - Inline Harness Connector End Views - X101 Through X374
  - Wiring Systems And Power Management - Inline Harness Connector End Views - X410 Through X901
  - Wiring Systems And Power Management - Repair Instructions
  - Wiring Systems And Power Management - Schematic And Routing Diagrams
  - Wiring Systems And Power Management - Special Tools And Equipment
  - Wiring Systems And Power Management - Specifications
- Charging Systems
  - Battery, Charging System And Starting System
- Component Locations
  - Component Locations - Door Component Views
  - Component Locations - Electrical Center Identification Views
  - Component Locations - Front Of Vehicle/Engine Compartment Component Views
  - Component Locations - Ground Views
  - Component Locations - Instrument Panel/Center Console Compartment Views
  - Component Locations - Luggage Compartment/Rear Of Vehicle Component Views
  - Component Locations - Master Electrical Component List
  - Component Locations - Passenger Compartment/Roof Component Views
  - Component Locations - Powertrain Component Views
  - Component Locations - Wheels/Vehicle Underbody Compartment Views
  - Electrical Component Locator
- Gauges
  - Displays And Gauges
  - Instrument Panel And Console Trim
- Horns
  - Specifications
  - Schematic and Routing Diagrams
  - Diagnostic Information and Procedures
  - Repair Instructions
  - Description and Operation
- Motors, Switches, Relays
  - Component Locations - Door Component Views
  - Component Locations - Electrical Center Identification Views
  - Component Locations - Front Of Vehicle/Engine Compartment Component Views
  - Component Locations - Ground Views
  - Component Locations - Instrument Panel/Center Console Compartment Views
  - Component Locations - Luggage Compartment/Rear Of Vehicle Component Views
  - Component Locations - Master Electrical Component List
  - Component Locations - Passenger Compartment/Roof Component Views
  - Component Locations - Powertrain Component Views
  - Component Locations - Wheels/Vehicle Underbody Compartment Views
  - Power Outlets
  - Wiring Systems And Power Management - Component Connector End Views - Index
  - Wiring Systems And Power Management - Component Connector End Views - 1 Through C
  - Wiring Systems And Power Management - Component Connector End Views - D Through E
  - Wiring Systems And Power Management - Component Connector End Views - F Through H
  - Wiring Systems And Power Management - Component Connector End Views - I Through O
  - Wiring Systems And Power Management - Component Connector End Views - P Through R
  - Wiring Systems And Power Management - Component Connector End Views - S
  - Wiring Systems And Power Management - Component Connector End Views - T Through Z
  - Wiring Systems And Power Management - Description And Operation
  - Wiring Systems And Power Management - Diagnostic Information And Procedures
  - Wiring Systems And Power Management - Inline Harness Connector End Views - X101 Through X374
  - Wiring Systems And Power Management - Inline Harness Connector End Views - X410 Through X901
  - Wiring Systems And Power Management - Repair Instructions
  - Wiring Systems And Power Management - Schematic And Routing Diagrams
  - Wiring Systems And Power Management - Special Tools And Equipment
  - Wiring Systems And Power Management - Specifications
- Starter
  - Battery, Charging System And Starting System
- Wiring Diagrams
  - Automatic Transmission - 4L60-E/4L65-E/4L70-E - Schematic And Routing Diagrams
  - Engine Controls And Fuel - 3.7L - Schematic And Routing 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 - 1 Through C
  - Wiring Systems And Power Management - Component Connector End Views - D Through E
  - Wiring Systems And Power Management - Component Connector End Views - F Through H
  - Wiring Systems And Power Management - Component Connector End Views - I Through O
  - Wiring Systems And Power Management - Component Connector End Views - P Through R
  - Wiring Systems And Power Management - Component Connector End Views - S
  - Wiring Systems And Power Management - Component Connector End Views - T Through Z
  - Wiring Systems And Power Management - Inline Harness Connector End Views - X101 Through X374
  - Wiring Systems And Power Management - Inline Harness Connector End Views - X410 Through X901
  - Wiring Systems And Power Management - Schematic And Routing Diagrams
Engine Mechanical
- Cooling System (Mechanical)
  - Engine Cooling
- Engine Exhaust
  - Specifications
  - Diagnostic Information and Procedures
  - Repair Instructions
  - Description and Operation
  - Special Tools and Equipment
- Lubrication System
  - Maintenance And Lubrication
- Mechanical
  - Engine Mechanical - 3.7L - Component Locator
  - Engine Mechanical - 3.7L - Description And Operation
  - Engine Mechanical - 3.7L - Diagnostic Information And Procedures
  - Engine Mechanical - 3.7L - Repair Instructions - Off Vehicle (1 Of 3)
  - Engine Mechanical - 3.7L - Repair Instructions - Off Vehicle (2 Of 3)
  - Engine Mechanical - 3.7L - Repair Instructions - Off Vehicle (3 Of 3)
  - Engine Mechanical - 3.7L - Repair Instructions - On Vehicle
  - Engine Mechanical - 3.7L - Schematic And Routing Diagrams
  - Engine Mechanical - 3.7L - Special Tools And Equipment
  - Engine Mechanical - 3.7L - Specifications
- Starter
  - Battery, Charging System And Starting System
Engine Performance
- Emissions
  - Base Ignition Timing Specifications
  - Emission Applications
  - Emission Control Abbreviations
  - State Emission Standards - Diesel
  - State Emission Standards - Gas
- Specifications
  - Firing Order & Cylinder Identification
- System
  - Engine Controls And Fuel - 3.7L - Description And Operation
  - Engine Controls And Fuel - 3.7L - Diagnostic Code Index
  - Engine Controls And Fuel - 3.7L - DTC P0013 To DTC P0328
  - Engine Controls And Fuel - 3.7L - DTC P0335 To DTC P1381
  - Engine Controls And Fuel - 3.7L - DTC P1400 To DTC P2635
  - Engine Controls And Fuel - 3.7L - Repair Instructions
  - Engine Controls And Fuel - 3.7L - Schematic And Routing Diagrams
  - Engine Controls And Fuel - 3.7L - Special Tools And Equipment
  - Engine Controls And Fuel - 3.7L - Specifications
  - Engine Controls And Fuel - 3.7L - Symptom Troubleshooting And Diagnosis
- Testing & Diagnosis
  - Engine Controls And Fuel - 3.7L - Description And Operation
  - Engine Controls And Fuel - 3.7L - Diagnostic Code Index
  - Engine Controls And Fuel - 3.7L - DTC P0013 To DTC P0328
  - Engine Controls And Fuel - 3.7L - DTC P0335 To DTC P1381
  - Engine Controls And Fuel - 3.7L - DTC P1400 To DTC P2635
  - Engine Controls And Fuel - 3.7L - Repair Instructions
  - Engine Controls And Fuel - 3.7L - Schematic And Routing Diagrams
  - Engine Controls And Fuel - 3.7L - Special Tools And Equipment
  - Engine Controls And Fuel - 3.7L - Specifications
  - Engine Controls And Fuel - 3.7L - Symptom Troubleshooting And Diagnosis
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
- OBD-II Drive Cycles - 3.7L
  - Inspection/Maintenance Complete System Set Procedure
- 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
  - Ordered Diagnostic Trouble Codes
- 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
  - Exhaust Systems
  - Reason Code Explanation
- Heating, Ventilation & A/C (HVAC)
  - Map - Heating, Ventilation, & Air Conditioning
- Hoist/Jack
  - General Information
- Identification
  - CANADIAN Model Cross-Reference
- Metric Conversions
  - Engine Displacement Conversion Table - ECAT
  - Metric Conversions
- OEM General Information
  - Dangers, Warnings, And Cautions
  - General Information
  - Vehicle Diagnostic Information - Diagnostic Information And Procedures
  - Vehicle Diagnostic Information - Specifications
  - Vibration Symptoms Diagnosis And Correction
- Reset Procedures
  - ATEQ TPMS Reset Procedure
  - BARTEC TPMS Reset Procedure
  - Maintenance And Lubrication
  - Maintenance Reminder Light (Reset Procedures)
  - Programming And Setup
  - Tire Pressure Monitor Systems
- RPO Codes
  - General Information
- Specifications Index
  - Common Specs & Procedures
- Steering
  - Map - Steering, Suspension, Wheel Alignment, Wheels & Tires
  - Wheel Alignment Theory & Operation - General Information
- Traction Control Disable Procedures
  - Traction Control Disable
- Trouble Shooting - Manual Transmission - General Information
  - * Please Read This First *
  - Introduction
Heating, Ventilation & A/C (HVAC)
- General Servicing
  - Cabin Air Filter (Special Applications) - General Information
- HVAC Control Systems
  - Heating, Ventilation, And Air Conditioning
  - HVAC - Manual
    - Specifications
    - Schematic and Routing Diagrams
    - Diagnostic Information and Procedures
    - Repair Instructions
    - Description and Operation
      - Manual HVAC Description and Operation
        HVAC Control Components
        HVAC Control Assembly
        Air Speed
        Air Temperature and Mode Actuators
        Recirculation Actuator
        A/C Refrigerant Pressure Sensor
        Evaporator Temperature Sensor
        Heating and A/C Operation
    - Special Tools and Equipment
Maintenance
- Procedures
  - Maintenance And Lubrication
  - Maintenance Reminder Light (Reset Procedures)
Restraints
- Air Bag, SRS
  - Supplemental Inflatable Restraints
- Restraints Control Systems
  - Seat Belts
- Seat Belts
  - Specifications
  - Schematic and Routing Diagrams
  - Diagnostic Information and Procedures
  - Repair Instructions
  - Description and Operation
Steering
- Manual Steering
  - Power Steering
- Power Steering
  - Specifications
  - Diagnostic Information and Procedures
  - Repair Instructions
  - Description and Operation
  - Special Tools and Equipment
- Steering Column
  - Steering Wheel And Column
Suspension
- Front Suspension
  - Front Suspension
  - Suspension General Diagnosis
- Rear Suspension
  - Rear Suspension
  - Suspension General Diagnosis
- Wheel Alignment
  - Specifications
  - Repair Instructions
  - Description and Operation
  - Special Tools and Equipment
- Wheels & Tire System
  - Tire Pressure Monitoring
  - Tires And Wheels
Transmission
- Automatic Trans
  - Automatic Transmission - 4L60-E/4L65-E/4L70-E - Component Locator
  - Automatic Transmission - 4L60-E/4L65-E/4L70-E - Description And Operation
  - Automatic Transmission - 4L60-E/4L65-E/4L70-E - Diagnostic Code Index
  - Automatic Transmission - 4L60-E/4L65-E/4L70-E - DTC P0218 To DTC P2771
  - Automatic Transmission - 4L60-E/4L65-E/4L70-E - Repair Instructions - Off Vehicle
  - Automatic Transmission - 4L60-E/4L65-E/4L70-E - Repair Instructions - On Vehicle
  - Automatic Transmission - 4L60-E/4L65-E/4L70-E - Schematic And Routing Diagrams
  - Automatic Transmission - 4L60-E/4L65-E/4L70-E - Special Tools And Equipment
  - Automatic Transmission - 4L60-E/4L65-E/4L70-E - Specifications
  - Automatic Transmission - 4L60-E/4L65-E/4L70-E - Symptom Troubleshooting And Diagnosis
  - Shift Lock Control
- Hydraulic Diagrams
  - Automatic Transmission - 4L60-E/4L65-E/4L70-E - Description And Operation
- Transfer Case - BW 4493/4494
  - Specifications
  - Schematic and Routing Diagrams
  - Component Locator
  - Diagnostic Information and Procedures
  - Repair Instructions - On Vehicle
  - Repair Instructions - Off Vehicle
  - Description and Operation
  - Special Tools and Equipment

Manual:HUMMER Hummer H3 Base 2010Page:14921 / 37523

Recirculation Actuator — 2010 Hummer H3 Base, Automatic Service Manual

Recirculation Actuator

The recirculation actuator is a 2-wire bi-directional electric motor. Two control circuits enable the actuator to operate. The control circuits use either ground or a 12-volt value to coordinate the actuator movement. The HVAC control assembly reverses the polarity of the control circuits to move the actuator in the opposite direction. The recirculation operation can function with blower motor in either the ON or OFF position. Recirculation is not available in Defrost and Mix-Blend mode. If an operator requests recirc in defrost or mix blend the recirc LED will flash 3 times and then turn OFF. The system will remain in fresh air mode.