GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 750529  Size: SH
  1. Remove the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .
  2. Disconnect the manifold absolute pressure (MAP) sensor electrical connector (1).

  3. Object Number: 858207  Size: SH
  4. Remove the MAP sensor bolt.
  5. Remove the MAP sensor.
  6. Inspect the MAP sensor seal for wear or damage, replace as necessary.

Installation Procedure

Important: Lubricate the port of the MAP sensor with clean engine oil. Avoid dipping the sensor port directly into the lubricant or using a solid type of lubricant, as they may block the vacuum port signal.


    Object Number: 858207  Size: SH
  1. Install the MAP sensor.
  2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the MAP sensor bolt.
  4. Tighten
    Tighten the bolt to 12 N·m (106 lb in).


    Object Number: 750529  Size: SH
  5. Connect the MAP sensor electrical connector (1).
  6. Install the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .