GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 851881  Size: SH
  1. Remove the fuel tank. Refer to Fuel Tank Replacement .
  2. Use a screwdriver in order to release the lock tab of the FLVV cover (1).
  3. Remove the FLVV cover (1) by rotating the cover counter clockwise while lifting up.

  4. Object Number: 851885  Size: SH
  5. Insert a pry tool (2) between the FLVV (1) and the FLVV gasket.
  6. Lift all around the outer edge of the FLVV and remove the FLVV (1) from the fuel tank.

Installation Procedure


    Object Number: 851886  Size: SH
  1. Install the FLVV gasket (1) into the fuel tank.

  2. Object Number: 851887  Size: SH
  3. Apply a light coat of motor oil to the sealing edge of the FLVV.
  4. Install the FLVV into the fuel tank while keeping the correct alignment for the hose connections.
  5. Place the FLVV cover onto the FLVV and rotate the cover clockwise until the lock tab is in position and engaged.
  6. Install the fuel tank. Refer to Fuel Tank Replacement .