GM Service Manual Online
For 1990-2009 cars only

Evaporative Emission System Hoses/Pipes Replacement Eng. - Canister

Removal Procedure

  1. Remove the fuel bundle between the engine and EVAP canister.

  2. Object Number: 420628  Size: SH
  3. Remove the EVAP purge pipe from the fuel bundle retaining clips (1).

Installation Procedure


    Object Number: 420628  Size: SH
  1. Install the EVAP purge pipe in the fuel bundle retaining clips (1).
  2. Install the fuel bundle.

Evaporative Emission System Hoses/Pipes Replacement Eng. - Chassis

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.


    Object Number: 309184  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 engine compartment EVAP pipe at the EVAP canister purge valve.

  3. Object Number: 583167  Size: SH
  4. Disconnect the engine compartment EVAP pipe (1) at the chassis EVAP pipe (2).
  5. Remove the EVAP pipe from the engine.
  6. Cap the EVAP canister purge valve and the chassis EVAP pipe in order to prevent possible EVAP system contamination.

Installation Procedure


    Object Number: 583167  Size: SH
  1. Remove the caps from the EVAP canister purge valve and the chassis EVAP pipe.
  2. Install the EVAP pipe on the engine.
  3. Connect the engine compartment EVAP pipe (1) to the chassis EVAP pipe (2).

  4. Object Number: 309184  Size: SH
  5. Connect the engine compartment EVAP pipe at the EVAP canister purge valve.