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.

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in general information.



2. Remove the hardware retaining the EVAP pipes. Note the location of the attaching hardware for installation.
3. Disconnect the EVAP pipes at the EVAP canister.
4. Disconnect the EVAP pipes at the fuel tank
5. Remove the EVAP pipes.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

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

1. Install the EVAP pipes into the vehicle.
2. Connect the EVAP pipes to the fuel tank.
3. Connect the EVAP pipes to the EVAP canister.

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

4. Reinstall the hardware retaining the EVAP pipe.