GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Turn OFF the ignition.
  2. Raise the bracket (1) enough to access the manifold absolute pressure (MAP) sensor.
  3. Disconnect the MAP sensor electrical connector.

  4. Object Number: 684801  Size: SH
  5. Remove the MAP sensor retaining bolt and washer (1).
  6. Remove the MAP sensor (3) from the intake manifold (2).
  7. Inspect the MAP sensor seal for wear or damage and replace as necessary.

Installation Procedure

Note: Lightly coat the MAP sensor seal with rubber lubricant P/N 9985770 before installing the sensor. The lubricant should be applied with a sponge or a brush. To prevent blockage, avoid dipping the sensor port directly into the lubricant.


    Object Number: 684801  Size: SH
  1. Install the MAP sensor (3).
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the MAP sensor retaining bolt and washer (1).
  4. Tighten
    Tighten the fastener to 12 N·m (106 lb in).

  5. Connect the MAP sensor electrical connector.