Where are the knock sensor located on 2001 chevrolet silverado 1500 4.8 located at

It should be on the drivers side under the exhaust manifold on the block. Look like a old style oil pressure switch.

you got engine knock check the knock sensor

it should but recheck ur wires and plugs first a bad plug or wire can cause a knock ping problem and set off sensor also check the knock sensor connections at rear of engine----- the knock sensors for the 8 cyl are located under the intake manifold so its labor intensive to replace the sensor

Here is a picture of what they look like, and they are usually located above the oil pan on the side of the engine block.

You have two knock sensor's, both sit under the in-take magifold on top of the engine, you will have to remove injector rail and in-take.

its on the driverside in the block under the exhaust manifold.

Under the intake manifold. Make sure you get the harness for the knock sensors. and clean out all of the rust and junk you're going to find donw in the holes before and after you replace the sensors.

bank one is the driver side 2 is on passenger side

on the 4.3l version the knock sensor is on the back left side of the engine right by the bell housing. on the bigger engines they are below the intake manifold in the engine valley

they are located under the intake manifold, it takes two. they sit in a pint size cup hole. they tend to rust from engine WASH.