GM Service Manual Online
For 1990-2009 cars only

Evaporative Emission System Hoses/Pipes Replacement Engine

Removal Procedure


    Object Number: 590442  Size: SH
  1. Remove the EVAP purge pipe (1) from the purge solenoid (2).
  2. Remove the EVAP purge pipe (1) from the EVAP canister (3).

Installation Procedure


    Object Number: 590442  Size: SH
  1. Install the EVAP purge pipe (1) to the EVAP canister (3).
  2. Install the EVAP purge pipe (1) to the purge solenoid (2).

Evaporative Emission System Hoses/Pipes Replacement Chassis

Front 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.


    Object Number: 590435  Size: SH
  1. Clean the pipe connections and the surrounding areas before disconnecting in order to avoid possible contamination of the EVAP system.
  2. Disconnect the fuel tank vapor pipe (1) from the canister.
  3. Release the EVAP pipe retaining clips (2).
  4. Remove the hose clamp securing the pipe to the hose connection (3).
  5. Remove the EVAP pipe.

Front Chassis EVAP Pipe Installation Procedure


    Object Number: 590435  Size: SH
  1. Position the EVAP pipe for installation.
  2. Install the EVAP pipe to the hose connector.
  3. Install the clamp.
  4. Install the EVAP pipe retaining clips (2).
  5. Connect the fuel tank vapor pipe (1) to the canister.

Rear 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.


    Object Number: 590435  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the hose clamp (3) securing the front EVAP pipe to the chassis mounted EVAP pipe.
  3. Release the EVAP pipe connector hose from the EVAP chassis pipe.
  4. Remove the fuel tank. Refer to Fuel Tank Replacement .
  5. Release the EVAP pipe from the chassis retainers.
  6. Remove the EVAP pipe.

Rear Chassis EVAP Pipe Installation Procedure


    Object Number: 590435  Size: SH
  1. Position the EVAP pipe for installation.
  2. Secure the EVAP pipe to the chassis retainers.
  3. Install the fuel tank. Refer to Fuel Tank Replacement .
  4. Install the EVAP pipe connector hose (3) from the front EVAP pipe to the chassis EVAP pipe.
  5. Secure the hose clamp.