GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 45722 Fuel Tank Sender Wrench

Removal Procedure

    Caution: Refer to Gasoline/Gasoline Vapors Caution in the Preface section.

    Caution: Refer to Safety Glasses Caution in the Preface section.

    Caution: Refer to Vehicle Lifting Caution in the Preface section.

  1. Remove rear seat cushion. Refer to Rear Seat Cushion Replacement .

  2. Object Number: 1949814  Size: SH
  3. Use a suitable tool (1) to prise the fuel tank module inspection cover away from the body.

  4. Object Number: 1949834  Size: SH

    Important:  Press release tab (2) on the electrical connector to release.

  5. Disconnect the electrical connector (1) from the primary fuel tank module.

  6. Object Number: 1949838  Size: SH
  7. Remove the fuel supply tube . Refer to Plastic Collar Quick Connect Fitting Service .

  8. Object Number: 1949844  Size: SH

    Important: Do not allow the tool to come in contact with the fuel pipes while unlocking the cam lock ring.

  9. Rotate the cam lock ring (1) counter-clockwise using the J 45722 .
  10. Important: The cam lock ring (1) is a single use part and therefore must be discarded after removal.

  11. Remove the cam lock ring (1) from the fuel tank.

  12. Object Number: 1949840  Size: SH

    Important: The primary fuel tank module (1) is vertical in the installed position, but pivots for removal.

  13. Carefully lift the primary fuel tank module (1) from the fuel tank only enough to access the transfer tube (2).
  14. Disconnect the fuel transfer tube from the module assembly (2).

  15. Object Number: 1949842  Size: SH
  16. Remove the primary fuel tank module (1) from the fuel tank (2).
  17. Remove the primary fuel tank module seal (1) from the module and discard the seal.

Installation Procedure


    Object Number: 1949847  Size: SH

    Important: Make sure the seal bead is facing the fuel tank.

  1. Place a new primary fuel tank module seal (1) over the module (2) lubricate the seal before installation with an approved lubricant.

  2. Object Number: 1949840  Size: SH

    Important: The primary fuel tank module (1) is vertical in the installed position, but pivots for removal.

  3. Carefully install the primary fuel tank module (1) to the fuel tank only enough to access the transfer tube (2).
  4. Connect the fuel transfer tube to the module assembly (2).

  5. Object Number: 1949842  Size: SH
  6. Install the primary fuel tank module (1) to the fuel tank (2).

  7. Object Number: 1949844  Size: SH
  8. Install a NEW cam lock ring (1) to the fuel tank.
  9. Important: Do not allow the tool to come in contact with the fuel pipes while locking the cam lock ring.

  10. Rotate the cam lock ring (1) clockwise using the J 45722 until fully seated.

  11. Object Number: 1949834  Size: SH
  12. Connect the electrical connector (1) to the primary fuel tank module.

  13. Object Number: 1949838  Size: SH
  14. Install the fuel supply tube to the fuel tank module. Refer to Plastic Collar Quick Connect Fitting Service .

  15. Object Number: 1949814  Size: SH

    Important: Used an approved sealant when installing the fuel tank module inspection cover.

  16. Install the fuel tank module inspection cover to the body.
  17. If re-programming is required. Refer to Control Module References .
  18. Install the rear seat cushion. Refer to Rear Seat Cushion Replacement .