On a 1997 Chevy Tahoe 5.7 Vortec, the camshaft position sensor (CMP sensor) is located on the
passenger side (right side) of the engine, near the front. It's typically mounted on the cylinder head,
fairly close to the distributor (if it's equipped with a distributor; some Vortecs in that year might have different ignition systems). It's a relatively small sensor with a single wire connector.
You'll likely need to refer to a repair manual or a detailed diagram specific to your year and engine for precise placement. A visual inspection of your engine bay will be necessary to pinpoint its exact location. Be aware that the access might be somewhat restricted, requiring some maneuvering to see and reach it.
