GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Corvette 🢒 Engine 🢒 Engine Controls and Fuel - 7.0L 🢒 Fuel Tank Crossover Tube Replacement

Removal Procedure

    Object Number: 903539 Size: SH
  1. Remove the driveline support assembly. Refer to Driveline Support Assembly Replacement .
  2. Remove the crossover tube from the clamp located above the transmission.
  3. Disengage the left crossover tube connector position assurance (CPA) retainer by pulling the tab (1) outward and rotate.

    4. Object Number: 903540 Size: SH

    Important: The crossover tube CPA is released when the latch disengages from the tank connection groove.

  4. Rotate crossover tube collar counterclockwise to disengage.
  5. Disconnect the crossover tube from the left fuel tank by pulling the tube straight out of the fuel tank connection.
  6. Repeat steps 3-5 for the right side tank.

Installation Procedure

    Object Number: 903547 Size: SH
  1. Inspect the O-rings for damage.

    2. Lubricate the right crossover tube to fuel tank connection O-rings (1-4) with GM P/N 1051717 (Canadian P/N 5728223) rubber lubricant.


    Object Number: 903557 Size: SH

    Important: Note the location of the T-shaped alignment feature (5) between the jet pump feed/return pipes connector.

  2. Lubricate the crossover tube O-ring mating surfaces (1-4) with GM P/N 1051717 (Canadian P/N 5728223) rubber lubricant.

    3. Important: 

       • Note the T-shaped alignment feature on the crossover tube.
       • The crossover tube will not fully seat into the fuel tank if the jet pump lines are misaligned.

  3. Connect the crossover tube to the right fuel tank using the features previously noted.

    4. Important: The crossover tube collar tangs will not latch if misalignment exists.

  4. Rotate the crossover tube collar (3) clockwise to engage the tangs.

    5. Object Number: 903539 Size: SH
  5. Rotate the crossover tube CPA retainer counterclockwise past the collar latching tang and push the tab (1) into the locked position.

    6. Important: If the CPA retainer is locked into position, the crossover tube collar will not rotate.

  6. Test the crossover tube to fuel tank connection by attempting to rotate the crossover tube collar counterclockwise.
  7. Repeat steps 1-6 for the left side fuel tank.
  8. Snap the crossover tube into the clamp located above the transmission.
  9. Install the driveline support assembly. Refer to Driveline Support Assembly Replacement .