Evaporative Emission Hoses/Pipes Replacement - Canister/Fuel Tank Canister - Chassis
Front Chassis EVAP Pipe Removal Procedure
Caution: In order to reduce the risk of fire and personal injury observe the
following items:
• Replace all nylon fuel pipes that are nicked, scratched or damaged
during installation, do not attempt to repair the sections of the nylon fuel
pipes • Do not hammer directly on the fuel harness body clips when installing
new fuel pipes. Damage to the nylon pipes may result in a fuel leak. • Always cover nylon vapor pipes with a wet towel before using a
torch near them. Also, never expose the vehicle to temperatures higher than
115°C (239°F) for more than one hour, or more than 90°C (194°F)
for any extended period. • Apply a few drops of clean engine oil to the male pipe ends before
connecting fuel pipe fittings. This will ensure proper reconnection and prevent
a possible fuel leak. (During normal operation, the O-rings located in the
female connector will swell and may prevent proper reconnection if not lubricated.)
- Clean the pipe connections and the surrounding areas before disconnecting in order to avoid possible contamination of the evaporative emission (EVAP) system.
- Disconnect the fuel tank vapor pipe (1) from the canister.
- Release the EVAP pipe retaining clips (2).
- Remove the hose clamp securing the pipe to the hose connection (3).
- Remove the EVAP pipe.
Front Chassis EVAP Pipe Installation Procedure
- Position the EVAP pipe for installation.
- Install the EVAP pipe to the hose connector.
- Install the clamp.
- Install the EVAP pipe retaining clips (2).
- Connect the fuel tank vapor pipe (1) to the canister.
Evaporative Emission Hoses/Pipes Replacement - Canister/Fuel Tank Chassis - Fuel Tank
Rear Chassis EVAP Pipe 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.
- Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
- Remove the hose clamp (3) securing the front EVAP pipe to the chassis mounted EVAP pipe.
- Release the EVAP pipe connector hose from the EVAP chassis pipe.
- Remove the fuel tank. Refer to the appropriate procedure in Fuel Tank Replacement .
- Release the EVAP pipe from the chassis retainers.
- Remove the EVAP pipe.
Rear Chassis EVAP Pipe Installation Procedure
- Position the EVAP pipe for installation.
- Secure the EVAP pipe to the chassis retainers.
- Install the fuel tank. Refer to the appropriate procedure in Fuel Tank Replacement .
- Install the EVAP pipe connector hose (3) from the front EVAP pipe to the chassis EVAP pipe.
- Secure the hose clamp.
