GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Enclave 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Fuel Hose/Pipes Replacement - Chassis

Removal Procedure

    Object Number: 1860283 Size: SH
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief.
  2. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement.
  3. Remove air cleaner assembly. Refer to Fuel Injector Sight Shield Replacement.
  4. Disconnect the brake pressure modulator valve from the body to provide clearance for the fuel pipes. Refer to Brake Pressure Modulator Valve Replacement
  5. Disconnect the fuel feed pipe (2) quick connect fitting from the fuel rail. Refer to Metal Collar Quick Connect Fitting Service.
  6. Disconnect the evaporative emission (EVAP) pipe (3) quick connect fitting from the EVAP purge solenoid. Refer to Plastic Collar Quick Connect Fitting Service.
  7. Cap the fuel rail and the EVAP purge solenoid in order to prevent possible fuel and/or EVAP system contamination.

    8. Object Number: 1859788 Size: SH
  8. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  9. Remove the intermediate steering shaft. Refer to Intermediate Steering Shaft Replacement.
  10. Disconnect the fuel pump fuel feed pipe quick connect fitting (6) from the chassis fuel feed pipe. Refer to Plastic Collar Quick Connect Fitting Service.
  11. Disconnect the EVAP canister vent front pipe quick connect fitting (5) from the chassis EVAP pipe. Refer to Plastic Collar Quick Connect Fitting Service.
  12. Remove the fuel feed/EVAP pipe assembly clip (1) from the body.
  13. Remove the fuel feed/EVAP pipe assembly clip nut (3) and clip (2) from the stud.
  14. Loosen the fuel feed/EVAP pipe clip (4) bolt, and remove the fuel feed/EVAP pipe assembly from the vehicle.
  15. Mark the location of the retainers on the new pipes and remove the plastic retainers from the old pipes using a soapy solution.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1859788 Size: SH
  1. Position the fuel feed and EVAP pipes to the vehicle individually, and install the plastic retainers to the marked locations. Tighten the fuel feed/EVAP pipe clip (4) bolt to 8 N·m (71 lb in).
  2. Install the fuel feed/EVAP pipe clip (2) and nut (3) to the stud and tighten to 9 N·m (80 lb in).
  3. Install the fuel feed/EVAP pipe clip (1) to the body.
  4. Connect the EVAP canister vent front pipe quick connect fitting (5) to the chassis EVAP pipe. Refer to Plastic Collar Quick Connect Fitting Service.
  5. Connect the fuel pump fuel feed pipe quick connect fitting (6) to the chassis fuel feed pipe. Refer to Plastic Collar Quick Connect Fitting Service.
  6. Install the intermediate steering shaft. Refer to Intermediate Steering Shaft Replacement.

    7. Object Number: 1860283 Size: SH
  7. Remove the caps from the fuel rail and the EVAP purge solenoid.
  8. Connect the EVAP pipe (3) quick connect fitting to the EVAP purge solenoid. Refer to Plastic Collar Quick Connect Fitting Service.
  9. Connect the fuel feed pipe (2) quick connect fitting to the fuel rail. Refer to Metal Collar Quick Connect Fitting Service.
  10. Tighten the fuel fill cap.
  11. Use the following procedure in order to inspect for leaks:
    12. • Turn the ignition ON, with the engine OFF, for 2 seconds.
    • Turn the ignition OFF for 10 seconds.
    • Turn the ignition ON, with the engine OFF.
    • Inspect for fuel leaks.
  12. Reconnect the brake pressure modulator valve from the body to provide clearance for the fuel pipes. Refer to Brake Pressure Modulator Valve Replacement
  13. Install the air cleaner assembly. Refer to Fuel Injector Sight Shield Replacement.
  14. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement.