GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Warning: Refer to Battery Disconnect Warning in the Preface section.


    Object Number: 1289411  Size: SH
  1. Disconnect the negative battery cable.
  2. Remove the intake air tube.
  3. Disconnect the breather hose.

  4. Object Number: 1289412  Size: SH
  5. Disconnect the coolant hose from the throttle body.
  6. Disconnect the throttle cables by opening the release slot.
  7. Disconnect the main throttle idle actuator (MTIA) electrical connector.
  8. Remove the throttle body bolt and the nuts.
  9. Remove the throttle body.

Installation Procedure


    Object Number: 1289412  Size: SH
  1. Install the throttle body assembly to the intake manifold.
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the throttle body retaining nuts and the bolt and tighten to 15 N·m (11 lb ft).
  4. Connect the throttle cable.
  5. Connect the coolant hoses.

  6. Object Number: 1289411  Size: SH
  7. Connect the breather hose.
  8. Install the intake air tube.
  9. Connect the negative battery cable.