GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 34730-1A Fuel Pressure Gauge
    • J 37088-A Tool Set, Fuel Line Quick Connect Separator

    Object Number: 107978  Size: SH

    Caution: Always wear safety goggles when working with fuel in order to protect the eyes from fuel splash.

  1. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief .
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove both of the rear wheel and tire assemblies. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  4. Attach a length of flexible fuel hose to an air operated pump device.
  5. Position an approved drain container under the left tank fuel sender.
  6. Wrap a shop towel around the left tank fuel feed rear pipe (4).
  7. Disconnect the fuel feed rear pipe (4) at the left tank fuel sender using the J 37088-A Fuel Line Quick-Connect Separator.
  8. Attach the flexible fuel hose from the pump device to the fuel feed pipe nipple (5) using a screw type clamp.
  9. Drain the left fuel tank until no fuel comes out.
  10. Disconnect the pump device from the left tank fuel feed pipe nipple (5).
  11. Cap the fuel feed pipe nipple (5) and the fuel feed rear pipe (4).

  12. Object Number: 43562  Size: SH
  13. Position an approved drain container under the right tank fuel sender.
  14. Wrap a shop towel around the auxiliary fuel return rear pipe that connects the (3) jet pump to the left tank at the right fuel sender.
  15. Disconnect the auxiliary fuel return rear pipe that connects the (3) jet pump to the left tank at the right tank fuel sender using the J 37088-A Fuel Line Quick-Connect Separator.
  16. Attach the flexible fuel hose from the pump device to the auxiliary fuel return rear pipe (3) nipple using a screw type clamp.
  17. Drain the right tank until no fuel comes out.
  18. Disconnect the pump device from the right tank fuel sender nipple.
  19. Cap the auxiliary fuel return rear pipe nipple (3) and the auxiliary fuel return rear pipe.