To be precise, you'll find it on the side of the throttle body, usually near the top. It's a small, cylindrical component with an electrical connector. However, its exact placement might vary slightly depending on the engine (4.3L, 5.7L, etc.).
It's best to consult a repair manual specific to your 1998 Chevy Blazer's engine for a diagram and precise location. A Haynes or Chilton manual would be very helpful. You can also use online resources like a parts diagram from a reputable auto parts website (e.g., AutoZone, Advance Auto Parts) by entering your vehicle's information. These diagrams usually show the location of parts relative to other components.
