GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2006 🢒 CTS 🢒 Engine 🢒 Engine Controls - 6.0L 🢒 Fuel Hose/Pipes Replacement - Engine Compartment

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1392557 Size: SH

    Notice: 

       • Do not repair the fuel feed or return pipes.
       • Replace the fuel feed and return pipes with original equipment or with parts that meet the GM specifications for those parts. The replacement pipe must have the same type of fittings as the original pipe in order to ensure the integrity of the connection.

  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .
  3. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief .
  4. Disconnect the quick-connect fitting at the chassis fuel pipe (3). Refer to Metal Collar Quick Connect Fitting Service .
  5. Remove the retaining nut (5) from the engine compartment fuel line bracket.

    6. Object Number: 1392565 Size: SH
  6. Disconnect the quick-connect fitting at the fuel rail (6). Refer to Metal Collar Quick Connect Fitting Service .
  7. Cap the pipes in order to prevent possible fuel system contamination.
  8. Remove the retaining nut from the fuel line bracket stud (5).

    9. Object Number: 1455623 Size: SH
  9. Remove the engine compartment fuel pipe from the vehicle.

Installation Procedure

    Object Number: 1455623 Size: SH
  1. Remove the caps from the pipes.
  2. Install the fuel pipe to the vehicle.

    3. Object Number: 1392565 Size: SH
  3. Connect the engine compartment pipe to the fuel rail. Refer to Metal Collar Quick Connect Fitting Service .

    4. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the fuel line bracket nut to the stud (5).

    5. Tighten
    Tighten the engine compartment fuel line nut to 10 N·m (89 lb in).


    Object Number: 1392557 Size: SH
  5. Install the fuel line bracket to the stud.
  6. Install the fuel line bracket nut to the stud (5).

    7. Tighten
    Tighten the engine compartment fuel line nut to 10 N·m (89 lb in).

  7. Connect the quick-connect fitting at the chassis fuel pipe (3). Refer to Metal Collar Quick Connect Fitting Service .
  8. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  9. Perform the following procedure in order to inspect for leaks:
    10. 9.1. Turn the ignition switch ON for 2 seconds.
    9.2. Turn the ignition switch OFF for 10 seconds.
    9.3. Turn the ignition switch ON.
    9.4. Inspect for fuel leaks.
  10. Install the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .