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For 1990-2009 cars only

Fuel Level Sensor Replacement 2500 Series - Rear Tank

Removal Procedure


    Object Number: 645600  Size: SH
  1. Remove the sending unit. Refer to Fuel Sender Assembly Replacement .
  2. Disconnect the fuel level sensor electrical connector.
  3. Remove the fuel level sensor retaining clip.
  4. Squeeze the locking tangs and remove the fuel level sensor (4).

Installation Procedure


    Object Number: 645600  Size: SH
  1. Install the fuel level sensor (4).
  2. Connect the fuel level sensor electrical connector.
  3. Install the fuel level sensor retaining clip.
  4. Install the sending unit. Refer to Fuel Sender Assembly Replacement .

Fuel Level Sensor Replacement Suburban/Yukon XLT

Removal Procedure


    Object Number: 871933  Size: SH
  1. Remove the sending unit. Refer to Fuel Sender Assembly Replacement .
  2. Disconnect the fuel pump electrical connector.

  3. Object Number: 871934  Size: SH
  4. Remove the fuel level sensor electrical connector retaining clip.

  5. Object Number: 871936  Size: SH
  6. Disconnect the sending unit electrical connector.

  7. Object Number: 871938  Size: SH
  8. Remove the fuel level sensor retaining clip.

  9. Object Number: 871942  Size: SH
  10. Squeeze the locking tangs together, and remove the fuel level sensor.

Installation Procedure


    Object Number: 871943  Size: SH
  1. Install the fuel level sensor.

  2. Object Number: 871944  Size: SH
  3. Install the fuel level sensor retaining clip.

  4. Object Number: 871936  Size: SH
  5. Connect the sending unit electrical connector.

  6. Object Number: 871934  Size: SH
  7. Install the fuel level sensor electrical connector retaining clip.

  8. Object Number: 871933  Size: SH
  9. Connect the fuel pump electrical connector.
  10. Install the sending unit. Refer to Fuel Sender Assembly Replacement .

Fuel Level Sensor Replacement Avalanche/Escalade EXT

Removal Procedure


    Object Number: 818018  Size: SH
  1. Remove the sending unit. Refer to Fuel Sender Assembly Replacement .
  2. Place the sending unit on a clean work surface.
  3. Disconnect the fuel level sensor electrical connector (1) from the module connector.

  4. Object Number: 818020  Size: SH
  5. Remove the fuel level sensor retaining clip.

  6. Object Number: 818017  Size: SH

    Important: Extreme care must be used when disengaging the locking tabs on the reservoir, failure to do so may result in the sender being unusable.

  7. Release the fuel sender reservoir retaining tabs on both sides of the reservoir (1).

  8. Object Number: 818023  Size: SH
  9. Remove the fuel level sensor wires from around the reservoir retaining tabs.
  10. Separate the module from the reservoir.

  11. Object Number: 818025  Size: SH
  12. Squeeze the retaining tabs together in order to slide the fuel lever sensor off of the reservoir.

Installation Procedure


    Object Number: 818025  Size: SH
  1. Slide the fuel lever sensor onto the reservoir until the retaining tabs snap into place.

  2. Object Number: 818023  Size: SH
  3. Slide the module into the reservoir.
  4. Route the fuel level sensor wires around the reservoir retaining tabs.

  5. Object Number: 818017  Size: SH
  6. Snap the sending unit reservoir retaining tabs (1) into both sides of the reservoir.

  7. Object Number: 818020  Size: SH
  8. Install the fuel level sensor retaining clip.

  9. Object Number: 818018  Size: SH
  10. Connect the fuel level sensor electrical connector (1) to the module connector.
  11. Install the sending unit. Refer to Fuel Sender Assembly Replacement .