GM Service Manual Online
For 1990-2009 cars only

Engine Compartment EVAP Pipe Removal Procedure


    Object Number: 172963  Size: SH
  1. Clean all the EVAP 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 (5) at the EVAP canister purge valve (6).
  3. Disconnect the engine compartment EVAP pipe (5) at the chassis EVAP pipe (4).
  4. Cap the EVAP pipes in order to prevent possible EVAP system contamination.

Engine Compartment EVAP Pipe Installation Procedure


    Object Number: 172963  Size: SH
  1. Remove the caps from the EVAP pipes.
  2. Connect the engine compartment EVAP pipe (5) to the chassis EVAP pipe (4).
  3. Connect the engine compartment EVAP pipe (5) to the EVAP canister purge valve (6).