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.
2009 Hummer H3 V8-5.3LFACTORY OEM SERVICE PROCEDURE
Fuel Level Sensor: Service and Repair
Fuel Level Sensor Replacement
Removal Procedure
1. Remove the fuel tank module. Refer to Fuel Tank Fuel Pump Module Replacement (Fuel Tank Fuel Pump Module Replacement).
2. Disconnect the fuel level sensor electrical connector (1) from the module cover.
3. Complete the following in order to remove the fuel level sensor (1) from the module bucket:
1. Disengage the locking tabs on the sensor.
2. Slide the sensor upward from the bucket.
Installation Procedure
1. Complete the following in order to install the fuel level sensor to the module bucket.
1. Align the edges of the sensor with the slots in the module bucket.
2. Slide the sensor down into position, ensure the locking tabs are fully engaged.
2. Connect the fuel level sensor electrical connector (1) to the module cover.
3. Install the fuel tank module. Refer to Fuel Tank Fuel Pump Module Replacement (Fuel Tank Fuel Pump Module Replacement).
Factory Service Tools
Use the Manual With the Right Hardware
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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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