H2 V8-6.2L (2008)
Evaporative Emissions Hose: Service and Repair
Evaporative Emission Hoses/Pipes Replacement - Canister/Fuel Tank
Evaporative Emission Hoses/Pipes Replacement - Canister/Fuel Tank
Removal Procedure
Important: When replacing the evaporative emission (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 (See: Starting and Charging/Battery/Service Precautions/Technician Safety
Information/Battery Disconnect Caution) .
1. Disconnect the negative battery cable.
2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief (With CH 48027) (See: Fuel Delivery and Air Induction/Fuel Filter/Fuel Pressure
Release/Service and Repair/Fuel Pressure Relief (With CH 48027))Fuel Pressure Relief (Without CH 48027) (See: Fuel Delivery and Air
Induction/Fuel Filter/Fuel Pressure Release/Service and Repair/Fuel Pressure Relief (Without CH 48027)) .
3. Drain the fuel tank. Refer to Fuel Tank Draining (See: Fuel Delivery and Air Induction/Fuel Tank/Service and Repair/Procedures) .
4. Raise the vehicle. Refer to Lifting and Jacking the Vehicle (See: Maintenance) .
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. Refer to Fuel Tank Replacement (See: Fuel Delivery and Air Induction/Fuel Tank/Service and Repair/Removal and
Replacement) .
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. Refer to Fuel Tank Replacement (See: Fuel Delivery and Air Induction/Fuel Tank/Service and Repair/Removal and
Replacement) .
4. Lower the vehicle.
5. Refill the fuel tank.
6. Connect the negative battery cable.
7. Tighten the fuel filler cap.
8. Perform the following procedure in order to 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.
