GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 903484  Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .
  3. Drain the fuel tank. Refer to Fuel Tank Draining .
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  5. Remove the left rear tire. Refer to Tire and Wheel Removal and Installation .
  6. Remove the left rear wheelhouse liner panel. Refer to Rear Wheelhouse Panel Liner Replacement .
  7. Remove both mufflers. Refer to Exhaust Muffler Replacement - Left Side and Exhaust Muffler Replacement - Right Side .
  8. Remove the driveline support assembly. Refer to Driveline Support Assembly Replacement .
  9. Disconnect the fuel fill hose and the recirculation line from the fill pipe.
  10. Disconnect the fuel pump jumper harness connector.

  11. Object Number: 903423  Size: SH
  12. Disconnect the fuel feed pipe (4) at the rear of the left fuel tank. Refer to Plastic Collar Quick Connect Fitting Service .
  13. Cap the fuel pipes to prevent fuel system contamination.

  14. Object Number: 903428  Size: SH
  15. Loosen the fuel tank strap in order to drop the tank approximately one inch.

  16. Object Number: 903539  Size: SH
  17. Disengage the crossover tube connector position assurance (CPA) retainer by pulling the tab (1) outward and rotate.

  18. Object Number: 903540  Size: SH

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

  19. Rotate crossover tube collar counterclockwise to disengage.

  20. Object Number: 903547  Size: SH
  21. Disconnect the crossover tube from the left fuel tank by pulling straight out.
  22. Important: Take care not to disturb the internal O-rings in the fuel tank connections.

  23. Disconnect the evaporative emission (EVAP) crossover pipe (2) quick connect fitting at the left fuel tank.
  24. Cap the EVAP pipe to prevent system contamination.

  25. Object Number: 903428  Size: SH
  26. Remove the fuel tank strap mount bolts.
  27. Remove the fuel tank strap from the vehicle.

  28. Object Number: 903417  Size: SH
  29. Remove the fuel tank.

Installation Procedure


    Object Number: 903417  Size: SH
  1. Install the fuel tank.
  2. Install the fuel tank strap to the vehicle.

  3. Object Number: 903428  Size: SH
  4. Install the fuel tank strap bolts loosely leaving the tank hanging approximately 1 inch.
  5. Remove the cap from the EVAP pipe.

  6. Object Number: 903412  Size: SH
  7. Connect the EVAP crossover pipe (2) quick connect fitting at the left fuel tank.

  8. Object Number: 903547  Size: SH
  9. Lubricate the crossover tube to fuel tank connection O-rings (1-4) with P/N 1051717 rubber lubricant.

  10. Object Number: 903557  Size: SH

    Important: Note the location of the T-shaped alignment feature (2) between the jet pump feed/return pipes connector.

  11. Lubricate the crossover tube O-ring mating surfaces (1, 3 and 4) with P/N 1051717 rubber lubricant.
  12. Important: Note the T-shaped alignment feature on the crossover tube.

    Important: The crossover tube will not fully seat into the fuel tank if the jet pump lines are misaligned.

  13. Connect the crossover tube to the left fuel tank using the features previously noted.
  14. Important: The crossover tube collar tangs will not latch if misalignment exists.

  15. Rotate the crossover tube collar (5) clockwise to engage the tangs.

  16. Object Number: 903539  Size: SH
  17. Rotate the crossover tube CPA retainer counter-clockwise past the collar latching tang and push the tab (1) into the locked position.
  18. Important: If the CPA retainer is locked into position, the crossover tube collar will not rotate.

  19. Test the crossover tube to fuel tank connection by attempting to rotate the crossover tube collar counterclockwise.
  20. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 903428  Size: SH
  21. Tighten the fuel tank strap bolts.
  22. Tighten
    Tighten the bolts to 25 N·m (18 lb in).

  23. Remove the cap from the fuel pipes.

  24. Object Number: 903423  Size: SH
  25. Connect the fuel feed pipe (4) at the rear of the left fuel tank. Refer to Plastic Collar Quick Connect Fitting Service .

  26. Object Number: 903484  Size: SH
  27. Connect the fuel pump jumper harness connector.
  28. Connect the fuel fill hose and the recirculation line to the fill tube.
  29. Tighten
    Tighten the clamp to 3.5 N·m (31 lb in).

  30. Install the driveline support assembly. Refer to Driveline Support Assembly Replacement .
  31. Install both mufflers. Refer to Exhaust Muffler Replacement - Left Side and Exhaust Muffler Replacement - Right Side .
  32. Install the left rear wheelhouse liner panel. Refer to Rear Wheelhouse Panel Liner Replacement .
  33. Install the left rear tire. Refer to Tire and Wheel Removal and Installation .
  34. Lower the vehicle.
  35. Refuel the fuel tank.
  36. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  37. Perform the following procedure in order to test for leaks:
  38. 24.1. Turn ON the ignition switch, for 2 seconds.
    24.2. Turn OFF the ignition, for 10 seconds.
    24.3. Turn ON the ignition.
    24.4. Inspect for fuel leaks.
  39. Program the transmitters. Refer to Transmitter Programming .