GM Service Manual Online
For 1990-2009 cars only

Evaporative Emission Hoses/Pipes Replacement - Engine Purge Pipe

Removal Procedure

  1. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .

  2. Object Number: 783172  Size: SH
  3. Disconnect the engine purge pipe (3) from the evaporative emission (EVAP) canister purge valve (2).
  4. Remove the engine purge pipe.

Installation Procedure


    Object Number: 783172  Size: SH
  1. Connect the engine purge pipe (3) to the evaporative emission (EVAP) canister purge valve (2).
  2. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .

Evaporative Emission Hoses/Pipes Replacement - Engine Vacuum Pipe

Removal Procedure

  1. Remove the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement .

  2. Object Number: 783172  Size: SH
  3. Disconnect the engine purge vacuum pipe from the intake manifold.
  4. Connect the engine purge vacuum pipe (1) to the EVAP canister purge valve (2).
  5. Remove the engine purge vacuum pipe.

Installation Procedure


    Object Number: 783172  Size: SH
  1. Connect the engine purge vacuum pipe to the EVAP canister purge valve.
  2. Connect the engine purge vacuum pipe to the intake manifold port.
  3. Install the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement .