Where is the camshaft position sensor on a 2003 oldsmobile alero?

The camshaft position sensor (CMP sensor) on a 2003 Oldsmobile Alero is located on the front of the engine, near the crankshaft pulley, but on the camshaft side of the engine. It's generally mounted on the cylinder head, close to the camshaft sprocket or gear.

Because there are variations between the 2.2L and the 3.4L engines, you'll need to consult a repair manual specific to your Alero's engine size. A repair manual (Chilton's, Haynes, or a factory service manual) with diagrams will give you the most precise location. Searching online for "2003 Oldsmobile Alero [2.2L or 3.4L] engine diagram" may also help visualize its position.

Important Note: Do not attempt to diagnose or replace the sensor without a proper understanding of automotive systems and safety precautions. Incorrect handling could lead to injury or further engine damage.