Notice: Do Not attempt to repair the EVAP pipes or the connecting hoses. Replace the damaged EVAP pipes or the connecting hoses are damaged. If the nylon EVAP pipe becomes kinked and cannot be straightened, it must be replaced.

Notice: Replace the EVAP pipes and hoses with the original equipment or parts that meet the GM specifications for those parts. The replacement EVAP pipe must have the same type of fittings as the original pipe in order to ensure the integrity of the connection. When replacing EVAP hoses, use only reinforced fuel-resistant hose identified with the word Fluoroelastomer or GM 6163-M on the hose. The inside hose diameter must match the outside pipe diameter. Do not use rubber hose within 100 mm (4 in) of any part of the exhaust system or within 254 mm (10 in) of the catalytic converter.

Notice: Cap the fittings and plug the holes when servicing the fuel system in order to prevent dirt and other contaminants from entering the open pipes and passages.

Important: Always maintain cleanliness when servicing the fuel system components.

Caution: Provide additional support when a vehicle is on a hoist in the following ways:

•	Before removing parts, support the opposite end. This helps prevent the vehicle from slipping off.

•	Before removing major components, chain the vehicle frame to the hoist pads at the same end as the removal. This helps avoid a tip-off.

Failure to follow these precautions could cause vehicle damage, serious personal injury, or death.
1. Raise the vehicle.



2. Remove the hardware retaining the EVAP pipes. Note the location of the attaching hardware for installation.
3. Remove the splash shield from the left rear bumper fascia in order to access the EVAP canister. Refer to Rear Bumper Fascia Splash Shield Replacement in Bumpers.
4. Disconnect the EVAP pipes at the EVAP canister.



5. Disconnect the EVAP vapor recirculation pipe (1) at the fuel filler pipe.
6. Disconnect the EVAP purge pipe (2) at the rear of the fuel tank.
7. Disconnect the EVAP fuel limiter vent valve pipe (3) at the fuel limiter vent valve.
8. Disconnect the EVAP vapor pipe (4) at the rear of the fuel tank.
9. Remove the EVAP pipes.

Notice: Properly secure the EVAP pipe in order to prevent chafing of the pipe.

Important: Route the replacement EVAP pipe as the original EVAP pipe was routed.

1. Install the EVAP pipes to the vehicle.
2. Connect the EVAP pipes at the EVAP canister.



3. Connect the EVAP vapor recirculation pipe (1) at the fuel filler pipe.
4. Connect the EVAP purge pipe (2) at the rear of the fuel tank.
5. Connect the EVAP pipe (3) at the fuel limiter vent valve.
6. Install the hardware retaining the EVAP pipe.
7. Verify all of the EVAP pipe clips and fasteners are properly installed.
8. Install the splash shield to the left rear bumper fascia. Refer to Rear Bumper Fascia Splash Shield Replacement in Bumpers.
9. Lower the vehicle.