GM Service Manual Online
For 1990-2009 cars only

Manifold Absolute Pressure Sensor Replacement L36

On the L36, the manifold absolute pressure (MAP) sensor is mounted to the positive crankcase ventilation (PCV) valve cover.

Removal Procedure

  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical 3.8L.
  2. Disconnect the MAP sensor electrical connector.

  3. Object Number: 12346  Size: SH
  4. Carefully release the locking tabs holding the MAP (1) sensor to the PCV valve cover (2) just enough to remove the MAP sensor.
  5. Pull the MAP sensor straight out of PCV valve cover.

Installation Procedure


    Object Number: 12346  Size: SH
  1. Ensure that the seal is installed on the MAP sensor and that the seal is not damaged.
  2. Position and install the MAP sensor (1) to the PCV valve cover (2). Ensure that the locking tabs engage to hold the MAP sensor to the PCV valve cover.
  3. Connect the MAP sensor electrical connector.
  4. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical 3.8L.

Manifold Absolute Pressure Sensor Replacement L67

Removal Procedure


    Object Number: 1552754  Size: SH
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical 3.8L.
  2. Disconnect the manifold absolute pressure (MAP) sensor electrical connector.
  3. Carefully release the locking tabs holding the MAP sensor (1) to the bracket.
  4. Remove the MAP sensor.

Installation Procedure


    Object Number: 1552754  Size: SH
  1. Ensure that the seal is installed on the MAP sensor and that the seal is not damaged.
  2. Position and install the MAP sensor (1) to the bracket. Ensure that the locking tabs engage to hold the MAP sensor to the bracket.
  3. Connect the MAP sensor electrical connector.
  4. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical 3.8L.