Evaporative Emission System Hoses/Pipes Replacement (Rear EVAP Fuel Tank Pipe)

Evaporative Emission System Hoses/Pipes Replacement (Rear EVAP Fuel Tank Pipe)

Removal Procedure

Important: When replacing the EVAP pipe, always replace the pipe with original equipment or parts that meet the GM specifications for this part. The replacement pipe must have the same type of fittings as the original pipe in order to ensure the integrity of the connection.






Caution: Refer to the Battery Disconnect Caution.

1. Disconnect the negative battery cable.
2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief.
3. Drain the fuel tank. Refer to Fuel Tank Draining.
4. Raise the vehicle. Refer to Vehicle Lifting.
5. Clean all fuel and EVAP pipe and hose connections and the surrounding areas before disconnection in order to avoid possible contamination of the fuel system.
6. Remove the fuel tank.
7. Remove the rear EVAP pipe from the fuel sender, the fuel tank roll over valve and the fuel tank clips.
8. Cap the fuel sender EVAP pipe and the fuel tank roll over valve.

Installation Procedure

1. Remove the caps from the fuel sender EVAP pipe and the fuel tank roll over valve.
2. Connect the rear EVAP pipe to the fuel sender, the fuel tank roll over valve, and the fuel tank clips.




3. Install the fuel tank.
4. Lower the vehicle.
5. Refill the fuel tank.
6. Connect the negative battery cable.
7. Tighten the fuel filler cap.
8. Inspect for leaks.

1. Turn ON the ignition for 2 seconds.
2. Turn OFF the ignition for 10 seconds.
3. Turn ON the ignition.
4. Inspect for fuel leaks.