GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1774993  Size: SH
  1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
  2. Disconnect the engine wiring harness electrical connector (1) from the manifold absolute pressure (MAP) sensor.

  3. Object Number: 1774994  Size: SH
  4. Remove the spark plug wire clip from the MAP sensor bracket, if necessary.

  5. Object Number: 1775003  Size: SH
  6. Remove the upper intake manifold bolt.
  7. Remove the MAP sensor bracket (5).
  8. Remove the MAP sensor (6) and seal from the upper intake manifold. Discard the seal.

Installation Procedure


    Object Number: 1775003  Size: SH
  1. Lubricate the NEW MAP sensor seal with clean engine oil.
  2. Install the MAP sensor (6) into the upper intake manifold.
  3. Place the MAP sensor bracket (5) into position.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the upper intake manifold bolt.
  6. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).


    Object Number: 1774994  Size: SH
  7. Install the spark plug wire clip to the MAP sensor bracket, if necessary.

  8. Object Number: 1774993  Size: SH
  9. Connect the engine wiring harness electrical connector (1) to the MAP sensor.
  10. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .