Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2007 Hummer H3 AutomaticFACTORY OEM SERVICE PROCEDURE
Repair and Diagnosis
You are viewing the "split tree" of links. The tree is cut off at a certain depth to keep the page loading fast, but you may have to click multiple links to get to the content you want.
View "full tree" with all links on one page (will load slowly, but easier to use ctrl-f to search all pages)
View "full tree" with all links on one page (will load slowly, but easier to use ctrl-f to search all pages)
Quick Lookups- Accessories & Equipment
- Accessories Control Systems
- Anti-Theft Systems
- Communication Devices
- Cruise Control Systems
- Entertainment Systems
- Exterior Lights
- Gauges & Instrument Panels
- Headlights
- Heated Glass/Defoggers
- Horns
- Infotainment
- Interior/Exterior Trim
- Interior/Illumination Lights
- Memory Modules
- Mirrors
- Seats
- Steering Column Switches
- Warning Systems
- Window Motors & Regulators
- Wiper/Washer Systems
- Body & Frame
- Brakes
- Drivelines & Axles
- Electrical
- Body Electrical
- OEM Connector End Views
- Power Outlets
- Wiring Systems And Power Management - Introduction (1 Of 3)
- Wiring Systems And Power Management - Introduction (2 Of 3)
- Wiring Systems And Power Management - Introduction (3 0F 3)
- Wiring Systems And Power Management - DTC B1373 To DTC B1478
- Wiring Systems And Power Management - Trouble Shooting And Service
- Charging Systems
- Component Locations
- Gauges
- Horns
- Motors, Switches, Relays
- OEM Connector End Views
- Power Outlets
- Wiring Systems And Power Management - Introduction (1 Of 3)
- Wiring Systems And Power Management - Introduction (2 Of 3)
- Wiring Systems And Power Management - Introduction (3 0F 3)
- Wiring Systems And Power Management - DTC B1373 To DTC B1478
- Wiring Systems And Power Management - Trouble Shooting And Service
- Starter
- Wiring Diagrams
- Body Electrical
- Engine Mechanical
- Engine Performance
- Emissions
- Specifications
- System
- Engine Controls And Fuel - 3.7L - Introduction (1 Of 2)
- Engine Controls And Fuel - 3.7L - Introduction (2 Of 2)
- Engine Controls And Fuel - 3.7L - DTC P0013 To DTC P0171
- Engine Controls And Fuel - 3.7L - DTC P0172 To DTC P0451
- Engine Controls And Fuel - 3.7L - DTC P0452 To DTC P2119
- Engine Controls And Fuel - 3.7L - DTC P2120 To DTC P2444
- Engine Controls And Fuel - 3.7L - Trouble Shooting And Diagnosis
- Testing & Diagnosis
- Engine Controls And Fuel - 3.7L - Introduction (1 Of 2)
- Engine Controls And Fuel - 3.7L - Introduction (2 Of 2)
- Engine Controls And Fuel - 3.7L - DTC P0013 To DTC P0171
- Engine Controls And Fuel - 3.7L - DTC P0172 To DTC P0451
- Engine Controls And Fuel - 3.7L - DTC P0452 To DTC P2119
- Engine Controls And Fuel - 3.7L - DTC P2120 To DTC P2444
- Engine Controls And Fuel - 3.7L - Trouble Shooting And Diagnosis
- General Information
- Abbreviations
- Basic Trouble Shooting
- Brakes
- Check Lists
- OBD-II Drive Cycles - 3.5L & 3.7L
- Driveline/Axles
- DTC Index
- Electrical
- Engine
- 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)
- Hoist/Jack
- Identification
- Metric Conversions
- OEM General Information
- Reset Procedures
- RPO Codes
- Specifications Index
- Steering
- Traction Control Disable Procedures
- Trouble Shooting - Manual Transmission - General Information
- Heating, Ventilation & A/C (HVAC)
- Maintenance
- Restraints
- Steering
- Suspension
- Transmission
- Automatic Trans
- Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (1 Of 2)
- Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (2 Of 2)
- Automatic Transmission - 4L60-E/4L65-E/4L70-E - DTC P0218 To DTC P1810
- Automatic Transmission - 4L60-E/4L65-E/4L70-E - DTC P1815 To DTC P2771
- Automatic Transmission - 4L60-E/4L65-E/4L70-E - Removal & Installation, Overhaul, Troubleshooting & Diagnosis
- Shift Lock Control
- Transfer Case - BW 4493/4494
- Hydraulic Diagrams
- Manual Trans
- Transfer Case - BW 4493/4494
- Automatic Trans
- External Pages
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.