GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 44402 Fuel Tank Sending Unit Wrench

Removal Procedure


    Object Number: 871947  Size: SH
  1. Remove the fuel tank. Refer to Fuel Tank Replacement .
  2. Disconnect fuel lines from the sending unit, if required. Refer to Plastic Collar Quick Connect Fitting Service .
  3. Using J 44402 , remove the sending unit lock ring.

  4. Object Number: 871951  Size: SH
  5. Remove the sending unit and seal. Discard the seal.
  6. Caution: Drain the fuel from the fuel sender assembly into an approved container in order to reduce the risk of fire and personal injury. Never store the fuel in an open container.

  7. Clean the sending unit sealing surfaces.

Installation Procedure

Caution: In order to reduce the risk of fire and personal injury that may result from a fuel leak, always replace the fuel sender gasket when reinstalling the fuel sender assembly.

Important: The fuel strainer must be in a horizontal position when the sending unit is installed in the tank. When installing the sending unit, assure that the fuel strainer does not block full travel of the float arm.


    Object Number: 871951  Size: SH
  1. Install a NEW sending unit seal.
  2. Align the tab, and install the sending unit.

  3. Object Number: 871947  Size: SH
  4. Using J 44402 , install the sending unit lock ring.
  5. Connect fuel lines to the sending unit, if required. Refer to Plastic Collar Quick Connect Fitting Service .
  6. Install the fuel tank. Refer to Fuel Tank Replacement .