GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1579820  Size: SH

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

    Important: Relieve the fuel system pressure. Refer to Fuel Pressure Relief.

  1. Disconnect the negative battery cable.
  2. Remove the EGR vacuum regulator solenoid electrical connector.
  3. Remove the one bolt, bracket and the EGR vacuum regulator solenoid (1) from the vehicle.

Installation Procedure


    Object Number: 1579820  Size: SH
  1. Install the EGR vacuum regulator solenoid (1) and the bracket to vehicle; secure with one bolt.
  2. Install the EGR vacuum regulator solenoid electrical connector.
  3. Connect the negative battery cable.