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.
2011 Buick Lucerne CXFACTORY OEM SERVICE PROCEDURE
Installation Procedure
- Place a NEW fuel pump sender O-ring seal onto the fuel tank.
- Tilt the sender toward the rear of the fuel tank to allow the fuel level sensor float arm to clear the tank opening. Install the sender into the fuel tank.
- Lower the sender assembly into the tank.
- Connect the internal vent line quick connect fittings (1 and 2) to the sender. Refer to Plastic Collar Quick Connect Fitting Service .
- Remove the string securing the internal vent lines.
- Install the sender lock ring, and move it into position on the top of the sender.
- Connect the vent line quick connect fitting (1) to the sender. Refer to Plastic Collar Quick Connect Fitting Service .
- Install the J 45722 to the lock ring.
NOTE:
The bucket must be tipped slightly during installation to avoid bending the fuel level sensor float arm.
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.