GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: Clean the tube connections and surrounding areas before disconnecting in order to avoid possible evaporative emission (EVAP) system contamination.


    Object Number: 1898570  Size: SH
  1. Remove the intake manifold cover. Refer to Upper Intake Manifold Sight Shield Replacement.
  2. Disconnect the engine EVAP line (1) quick connect fitting from the intake manifold. Refer to Plastic Collar Quick Connect Fitting Service.
  3. Disconnect the engine EVAP line (1) quick connect fitting from the EVAP canister purge solenoid valve. Refer to Plastic Collar Quick Connect Fitting Service.
  4. Cap the intake manifold port and the EVAP canister purge solenoid valve in order to prevent possible EVAP system contamination.

Installation Procedure


    Object Number: 1898570  Size: SH
  1. Remove the caps from the intake manifold port and the EVAP canister purge solenoid valve.
  2. Connect the engine EVAP line (1) quick connect fitting to the EVAP canister purge solenoid valve. Refer to Plastic Collar Quick Connect Fitting Service.
  3. Connect the engine EVAP line (1) quick connect fitting to the intake manifold. Refer to Plastic Collar Quick Connect Fitting Service.
  4. Install the intake manifold cover. Refer to Upper Intake Manifold Sight Shield Replacement.