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Fuel Pump/Sender Assembly: Installation

NOTE: Numbers in illustration refer to numbers in parenthesis in following step.
  1. Ensure seal bead is facing fuel tank. Place new fuel pump/sender assembly seal (1) over assembly (2). See Fig 4 . Grasp transfer tube from inside fuel tank. Position assembly near assembly opening. Connect transfer tube to assembly.
  2. The fuel pump/sender assembly is horizontal in installed position, but pivots from vertical position for installation. Ensure fuel level float is free from binding while inserting assembly. See Fig 3 .
  3. Carefully insert fuel pump/sender assembly into fuel tank. Press fuel pump/sender assembly downward, aligning assembly to encapsulated ring. Position cam lock ring to fuel tank.
  4. Do not allow tool to come in contact with fuel pipes while locking cam lock ring. See Fig 1 . Rotate cam lock ring clockwise using Fuel Tank Sender Wrench until fully seated.
  5. Connect electrical connector to fuel pump/sender assembly. Install fuel tank hoses. See FUEL HOSES/PIPES - FILTER TO TANK  .
Fig 1: Removing/Installing Fuel Pump/Sender Assembly (Primary) Cam Lock Ring
G00232160Courtesy of GENERAL MOTORS CORP.
Fig 2: Disconnecting Fuel Pump/Sender Assembly (Primary) Transfer Tube
G00232159Courtesy of GENERAL MOTORS CORP.
Fig 3: Removing/Installing Fuel Pump/Sender Assembly (Primary)
G00232161Courtesy of GENERAL MOTORS CORP.
Fig 4: Installing Fuel Pump/Sender Assembly Seal
G00232162Courtesy of GENERAL MOTORS CORP.


  1. Ensure seal bead is facing fuel tank. Place new fuel pump/sender assembly seal (1) over assembly (2). See Figure . Grasp transfer tube from inside fuel tank. Position assembly near assembly opening. Connect transfer tube to assembly.
  2. Ensure fuel level float is free from binding while inserting fuel pump/sender assembly. Carefully insert fuel pump/sender assembly into fuel tank. See Fig 3 . Press fuel pump/sender assembly downward, aligning module to encapsulated ring. Position cam lock ring to fuel tank.
  3. Rotate cam lock ring clockwise using Fuel Tank Sender Wrench until fully seated. Connect electrical connector to fuel pump/sender assembly. Install fuel tank. See FUEL TANK  .
Fig 1: Removing/Installing Fuel Pump/Sender Assembly (Secondary) Cam Lock Ring
G00232163Courtesy of GENERAL MOTORS CORP.
Fig 2: Disconnecting Fuel Pump/Sender Assembly (Secondary) Transfer Tube
G00232165Courtesy of GENERAL MOTORS CORP.
Fig 3: Removing/Installing Fuel Pump/Sender Assembly (Secondary)
G00232164Courtesy of GENERAL MOTORS CORP.