GM Service Manual Online
For 1990-2009 cars only

Fuel Filter Replacement Primary

Removal Procedure


    Object Number: 1993205  Size: MH
  1. Open the air bleeder (2) in the fuel head (3).
  2. Important: The air bleeder must be open in order for fuel to drain from the element case.

  3. Use the drain plug (8) to drain the fuel from the fuel filter element case (6).
  4. Disconnect the water warning switch harness connector.
  5. Use the 5-8840-0253-0 fuel filter wrench on the bottom of the element case nut feature (a) to remove the element case (6).
  6. Remove the fuel filter element (5) and O-ring (4) from the fuel filter head. Discard the O-ring.
  7. Confirm that the float at the bottom of the element case moves up and down smoothly.
  8. Clean and inspect the fuel filter head and element case of deposits and foreign material.

Installation Procedure


    Object Number: 1993207  Size: MH
  1. Install the NEW O-ring to the fuel filter head groove (7).
  2. Apply a thin layer of fuel to lubricate the fuel filter element gasket (4) and install the fuel filter element (3) into the fuel filter head. Use a clockwise rotation to seat the element in the fuel filter body.
  3. Apply a thin layer of fuel to the inner circumference of the element case and fuel filter head O-ring.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Use the 5-8840-0253-0 fuel filter wrench on the bottom of the element case nut feature to install the element case.
  6. Tighten
    Tighten the case to 33 N·m (25 lb ft).

  7. Tighten the drain plug on the element case.
  8. Tighten
    Tighten the drain plug to 4 N·m (35 lb in).

  9. Bleed the fuel system. Refer to Fuel System Bleeding .
  10. Start the engine and check for fuel leaks and no looseness in each fuel filter component.

Fuel Filter Replacement Secondary

Removal Procedure


    Object Number: 1993229  Size: SH
  1. Open the air bleeder (2) in the fuel head (3).
  2. Important: The air bleeder must be open in order for fuel to drain from the element case.

  3. Use the drain plug (8) to drain the fuel from the fuel filter element case (6).
  4. Disconnect the water warning switch harness connector.
  5. Important: If fuel filter head replacement is necessary, perform Steps 4, 5, 6. If not necessary, go to step 7.

  6. Use the 5-8840-0253-0 fuel filter wrench on the bottom of the element case nut feature to remove the element case (6).
  7. Remove the fuel filter element (5) and O-ring (4) from the fuel filter head. Discard the O-ring.
  8. Check the primary filter for clogging. Replace if necessary.
  9. Inspect the fuel filter head contact surface for cracks and pitting. Replace if necessary.

  10. Object Number: 1993228  Size: SH

    Important: If fuel filter head replacement is necessary, perform Steps 4, 5, 6. If not necessary, go to step 7.

  11. Disconnect the fuel filter head harness connector.
  12. Remove the clips.
  13. Disconnect the fuel hoses from the fuel filter head.

  14. Object Number: 1993210  Size: SH
  15. Remove the fuel filter and the fuel filter head from the fuel filter head bracket.

Installation Procedure


    Object Number: 1993210  Size: SH
  1. Install the fuel filter head to the fuel filter bracket.

  2. Object Number: 1993229  Size: SH
  3. Install the fuel filter element (5) into the fuel filter head. Use a clockwise rotation to seat the element in the fuel filter body.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Use the 5-8840-0253-0 fuel filter wrench on the bottom of the element case nut feature to install the element case.
  6. Tighten
    Tighten the case to 33 N·m (25 lb ft).

  7. Install the drain plug and O-ring into the element case.
  8. Install the fuel hoses to the fuel filter.
  9. Connect the fuel filter head harness connector.
  10. Bleed the fuel system. Refer to Fuel System Bleeding .
  11. Start the engine and check for fuel leaks and no looseness in each fuel filter component.