To be sure, you should:
1. Consult a repair manual: A Haynes or Chilton repair manual specific to your 1998 Oldsmobile Bravada will have diagrams and precise instructions showing the CKP sensor's location. This is the most reliable method.
2. Use an online parts diagram: Websites selling auto parts (like AutoZone, Advance Auto Parts, etc.) often have diagrams you can view by entering your vehicle's year, make, and model. Look for diagrams of the engine.
3. Search online forums: Search forums dedicated to Oldsmobile or GM vehicles. Someone may have already posted a picture or description of the location on a similar model.
Important Note: Before attempting any work on your vehicle, ensure the engine is cool and disconnect the negative battery terminal to prevent electrical shocks or damage.