Sierra Classic 2500 4WD V8-6.0L (2007)
9. Lower the vehicle.
10. Remove the cap from the fuel rail.
11. Connect the fuel feed line (1) at the engine.
12. Connect the EVAP canister purge tube line (2).
13. Install the fuel fill cap.
14. Connect the negative battery cable.
15. Use the following procedure in order to inspect for leaks:
1. Turn the ignition ON, with the engine OFF, for 2 seconds.
2. Turn the ignition OFF for 10 seconds.
3. Turn the ignition ON, with the engine OFF.
4. Inspect for fuel leaks.
Evaporative Emission (EVAP) Hoses/Pipes Replacement - Chassis (1500 Crew Cab)
EVAPORATIVE EMISSION HOSE/PIPE REPLACEMENT - CHASSIS (1500 CREW CAB)
REMOVAL PROCEDURE
IMPORTANT: Clean the fuel and evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the fittings in
order to avoid possible system contamination.
1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief (With CH 48027) Fuel Pressure Relief (Without CH 48027).
2. Disconnect the fuel feed line (1) fitting at the engine.
3. Disconnect the EVAP canister purge tube (2) fitting.
4. Cap the fuel rail and EVAP lines in order to avoid possible system contamination.
5. Raise and support the vehicle. Refer to Vehicle Lifting.
