Where is the knock sensor located on a 1995 Sierra with 5.7 engine?

On a 1995 GMC Sierra with a 5.7L engine (likely a Vortec), the knock sensor is typically located on the passenger side of the engine block, near the front. It's often near the distributor or in that general vicinity, but its exact placement can vary slightly depending on the specific engine configuration.

To be sure, you should:

* Consult your vehicle's repair manual: This is the most reliable source for the exact location.

* Use a reliable online parts diagram: Many auto parts websites (like AutoZone, Advance Auto Parts, etc.) have detailed diagrams you can search using your vehicle's year, make, model, and engine. Look for diagrams showing the engine's sensors.

Be aware that it's a relatively small sensor, often threaded into the engine block. It might be difficult to see without carefully looking around that general area.