Manifold Absolute Pressure (MAP) Sensor Replacement: Notes
WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
On the L26, the manifold absolute pressure (MAP) sensor is mounted to the positive crankcase ventilation (PCV) valve cover.