The knock sensors are located in the rocker valley underneath the intake manifold. GEt a hynes manual to assist you in replacing them. There is acertain tightening sequence when taking the manifold on and off. It is made of a composite plastic so use care and do not over tighten.
Since your there, you should replace the vally pan gasket (dealer only part about $30) and the knock sensor seals (also dealer only about $5 a peice) make sure u don't get any junk down the motor by placing clean rages in each intake port and if replacing vally pan gasket, put rags in it's opening. Make sure all matting surfaces are clean. I jus suggest this because by replacing the knock sensors u already are going to have to replace the intake set. (get felpro from auto store much better than oem trust me) and since u have to pull the pcv valve just replace it to a hole wopping $5 at auto store. I suggest this because the 5.3 motor has a habit of loosing vacume and running bad. All these parts are related to that and if u are there do it once and do it right! Hope this helps everyone.
WERE IS THE KNOC SENSOR ON A 2001 SILVERADO 5.3 L
SOURCE: knock sensor for 1997 chevy C1500 Pickup Truck
Located on right hand side of block (pass side). It is between motor mount and starter.
SOURCE: Knock sensor location
if its a cmfi or csefi injection system theres 2 knock sensors 1 on each side of engine block,1 under the left bank of block,the other under right bank of block,tbi inj. theres 1 in front of starter.
SOURCE: need picture of knock sensor location on a 1999
In the valley under the intake, one in the front and one in the back.
It takes about 3 hrs to replace them and it's going to run you around $140 for parts. However, they rarely go bad. Usually it is due to wire chaffing or corrosion due to a coolant leak.
http://www.jimfancher.com/sierra/p0332.htm
SOURCE: Location of a knock sensor Chevy S10 truck
I just got my truck back from being fixed and now the engine light is on. They said now its the Knock sensor. I just had 2 injectors plugs and wires and ems brain put on. What now?
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How do I replace a knock sensor on an 01 1500 5.3L?
2000 chevy tahoe 5.3l v8 both knock sensors are bad and i do not know where they are located
I have a problem with the knock sensor being bad or going bad per my mechanic. He showed me another engine (5.3 L. V8) to show me where the sensors are located. This looks like it can be an expensive repair from a labor cost stand point. The sensors are located under the intake manifold on top of the engine. I was quoted approx. $300 to replace them. This quote was conservative!
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