I can't find the knock sensors

the knock sensor (KS, only one of them) for the 4.3L engine is located on the top rear of engine, pic below..

My knock sensor is throwing a check engine light and i have no idea where it is located. can you help

Engine Mechanical problem 6 cyl Four Wheel Drive Automatic 104,00 miles

I need the location of the knock sensor can you please tell me?

Hello,

The knock sensor is located at the rear of the block near the firewall at the transmission flange. Here is a diagram (below) to help you see where it is.Please let us know if you need anything else to get the problem fixed.

I am trying to locate the knock sensors for a 98 chevy blazer with a v6 engine. I cannot find them anywhere! i looked all over the block and around the starter. The book says " located in engine block. one under left bank cylinder head, and one under right bank cylinder head." Please help...

No wonder....Approach the engine from the left side, and look under the distributer. It appears to be located just forward of the transmission bellhousing, and just on the left side of top of the engine block. It is aft of the left head, and almost looks like it is right on the flange of the engine to tranny mount.

where is the knock sensor located?

At the top rear of the engine, behind/below distributor.

See the guide below for an idea of what you are in for

https://www.2carpros.com/articles/how-a-knock-sensor-works

Vehicle specific instructions/diagrams are attached below

Engine Mechanical problem
1996 Chevy Blazer 4.3L 6 cyl Four Wheel Drive Automatic

Where Will I Find The Knock Sensor?

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Looks like rear of engine, two wire connector.

i went to auto zone to put have my blazer checked for my :engine soon light was on: the gentlemen read three codes 1 egr was bad then my knock sensor was bad but as im driving ive never heard knocking is there something else im missing???? i need help ty

can you get the exact codes for me? they may not be bad.

a knock sensor is a piezo type sensor that senses engine detonation and then changes ignition timing to prevent damage to the cylinders.

you wont hear a knocking sound necessarly, probably only when going up a steep hill.

Engine Performance problem
1994 Chevy Blazer 6 cyl Four Wheel Drive Automatic 135xxx miles

where are the knock sensors located at on my blazer? i was told just above the oil pan on either side,is this correct?

I will assume if it's a six, it's an s10 blazer? There are several location depending on your VIN here's the list. K1500 full size is different!

At J1 and J2

it is a 1994 s10 blazer tahoe lt 4.3 vortech. the diagram you put up looks right,i def have one where J2 is but i can't seem to find the other one..and is there anything i should know about the replacement?

Do you have a scan tool that reads sensor data? If yes, start the truck, attache scanner, tap on head near the knock sensor, look for change in the way the graph or line representing the sensor looks, also check for timing to retard a bit when you tap, if these happen, the sensor is OK! As far as location I only posted what I found, havent replaced too many of them!

I have a 1996 Chevy blazer 4wheel drive 2door where is my knock sensor located at can some send a picture of it please. And is it easy to change my self. Please help

It's on the rear of the engine, Screws into the block between the distributor and the drivers side cylinder head. Very easy to replace BUT how have you tested it to be sure it's faulty and not the wiring? Code?