Generally, on most GM engines of that era, the CKP sensor is located on the passenger side of the engine block, near the crankshaft pulley. It's often near the bellhousing (where the transmission connects to the engine). However, it *could* be in other locations depending on the engine.
To accurately locate it:
1. Identify your engine code: This is crucial.
2. Consult a repair manual specific to your Suburban's year and engine: A Haynes or Chilton manual, or a service manual from a reputable source, will have diagrams and detailed instructions.
3. Use an online parts diagram: Many auto parts websites (like AutoZone, Advance Auto Parts, etc.) allow you to select your vehicle's year, make, model, and engine to view diagrams showing the CKP sensor's location.
Without the engine code, providing a precise location is impossible.