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 H2 V8-6.0LFACTORY OEM SERVICE PROCEDURE
Oxygen Sensor: Locations
Engine Controls Component Views
Chassis Mounted Components
1 - Fuel Filter
2 - Fuel Tank
3 - Fuel Pump and Sender Assembly
4 - Fuel Tank Pressure (FTP) Sensor
5 - Evaporative Emission Canister Vent (EVAP) Solenoid
6 - EVAP Canister
7 - Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
8 - Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2
9 - Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
10 - Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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