In the 1993 Chevrolet Lumina with a 3.1L V6 engine, the knock sensor is typically located on the engine block, near the oil pan. Specifically, it can often be found on the lower part of the engine, towards the back, on the driver's side. This placement allows it to effectively detect vibrations from the engine that may indicate knocking. Always refer to the vehicle's service manual for precise location and specifications.
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