Sierra 1500 4WD V8-6.0L (2007)
Evaporative Emissions Hose: Service and Repair
Evaporative Emission (EVAP) Hoses/Pipes Replacement - Chassis (1500 Extended/Crew Cab w/8 Ft
Bed)
Evaporative Emission Hose/Pipe Replacement - Chassis (1500 Extended/Crew Cab w/8 Ft Bed)
Removal Procedure
Important: Clean all fuel and evaporative emission (EVAP) lines connections and surrounding areas prior to disconnecting the lines in order to
avoid possible fuel and/or EVAP system contamination.
1. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief (With CH 48027) Fuel Pressure Relief (Without CH 48027).
2. Disconnect the engine evaporative emission (EVAP) line (1) quick connect fitting from the chassis EVAP line.
3. Disconnect the fuel feed line quick connect fitting (2) from the fuel rail.
4. Cap the fuel rail and EVAP pipes.
5. Raise and support the vehicle. Refer to Vehicle Lifting.
6. Unbolt and reposition the front propeller shaft, if required. Refer to Front Propeller Shaft Replacement.
