Sierra 1500 4WD V8-6.0L (2007)
8. Open the axle vent hose clip on the fuel fill pipe bracket.
9. Remove the rear axle vent hose from the clip.
10. Disconnect the fuel fill pipe recirculation line quick connect fitting (2) from the evaporative emission (EVAP) rear hose.
11. Loosen the fuel tank fill pipe clamp (1) at the fuel tank.
12. Remove the fuel tank fill pipe.
13. Cap the opening on the fuel tank in order to prevent possible system contamination.
Installation Procedure
