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.
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HOMESERVICE MANUALSCHEVROLET1999EXPRESS 1/2 TON VAN V6-4.3L VIN WREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSFUEL LEVEL SENSORSERVICE AND REPAIR
1999 Chevrolet Express 1/2 Ton Van V6-4.3L VIN W
Fuel Level Sensor: Service and Repair
1999 Chevrolet Express 1/2 Ton Van V6-4.3L VIN WSECTION Service and Repair
REMOVAL PROCEDURE
TOOLS REQUIRED
^ J34730-1A Fuel Pressure Gauge
^ J 39765 Fuel Sender Lock Nut Wrench
CAUTION: Refer to Battery Disconnect Caution in Service Precautions.
1. Disconnect the negative battery cable.
2. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief Procedure.
3. Drain the fuel tank. Refer to Fuel Tank Draining Procedure.
4. Remove the fuel tank.
5. Remove the fuel sender assembly.
6. Disconnect the fuel pump electrical connector (5).
7. Remove the fuel level sensor electrical connector retaining clip (6).
8. Disconnect the fuel level sensor electrical connector (7) from under the fuel sender cover.
9. Remove the fuel level sensor retaining clip (4).
10. Squeeze the locking tangs and remove the fuel level sensor (3).
INSTALLATION PROCEDURE
1. Install the fuel level sensor (3).
2. Install the fuel level sensor retaining clip (4).
3. Connect the fuel level sensor electrical connector (7).
4. Connect the fuel level sensor electrical connector retaining clip (6).
5. Connect the fuel pump electrical connector (5).
6. Install the fuel sender assembly.
7. Install the fuel tank.
8. Refill the fuel tank.
9. Install the fuel filler cap.
10. Connect the negative battery cable.
11. Inspect for leaks.
11.1. Turn the ignition switch ON for 2 seconds.
11.2. Turn the ignition switch OFF for 10 seconds.
11.3. Turn the ignition switch ON.
11.4. Check for fuel leaks.
RENDER: 1.0x
NO RELATED
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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.