Evaporative Emission System Hoses/Pipes Replacement (Chassis EVAP Pipe)

Evaporative Emission System Hoses/Pipes Replacement (Chassis EVAP 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.




1. Clean all the EVAP pipe connections and the surrounding areas before disconnecting the pipes in order to avoid possible contamination of the EVAP system.
2. Disconnect the engine compartment EVAP pipe (6) from the chassis EVAP pipe (3).
3. Cap the engine compartment EVAP pipe.
4. Raise the vehicle. Refer to Vehicle Lifting.
5. Remove the left hand catalytic converter.
6. Remove the EVAP pipe from the bellhousing stud clip (4).
7. Remove the EVAP pipe from the transmission bracket clip.




8. Disconnect the rear EVAP purge pipe from the EVAP canister.
9. Cap the rear EVAP purge pipe.
10. Note the position of the EVAP pipe for aid in installation.
11. Remove the EVAP pipe from the retaining clips.
12. Remove the EVAP pipe.

Installation Procedure

1. Install the EVAP pipe into the retaining clips.




2. Remove the cap from the rear EVAP pipe.
3. Connect the rear EVAP purge pipe to the EVAP canister.




4. Install the EVAP pipe into the transmission bracket clip.
5. Install the EVAP pipe into the bellhousing stud clip (4).
6. Install the left hand catalytic converter.
7. Lower the vehicle.
8. Remove the cap from the engine compartment EVAP pipe.
9. Connect the engine compartment EVAP pipe (6) to the chassis EVAP pipe (3).