Sierra 1500 4WD V8-5.3L VIN B HO (2006)
1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure.
2. Disconnect the fuel feed and pressure balance lines from the front tank.
3. Cap the fuel and balance lines at the fuel tank in order to avoid possible system contamination.
4. Disconnect the fuel feed and pressure balance lines from the rear tank.
5. Cap the fuel and balance lines at the fuel tank in order to avoid possible system contamination.
6. Remove the rear fuel line bundle clip nuts.
7. Remove the rear fuel line bundle.