To be absolutely certain:
* Consult a repair manual: A Haynes or Chilton repair manual specific to your 2002 Oldsmobile Bravada will have diagrams showing the exact location of the CKP sensor. This is the most reliable method.
* Use an online parts diagram: Many auto parts websites (like AutoZone, Advance Auto Parts, etc.) allow you to select your vehicle's year, make, and model, and then view diagrams of the engine components. Look for a diagram specifically of the engine's bottom end or the oil pan area.
Because of the potential for variation and the need for precise location for repair, relying on a visual diagram from a reliable source is strongly recommended before attempting any work on your vehicle.