Where is the knock sencor on a 1992 Blazer

Reset the ecu,

In the blocks water jacket.

First, I would like to mention that most knock sensor codes are not caused by the knock sensors, but a mechanical problem with the engine. The knock sensors cannot differentiate between noises caused by mechanical problems like a bad pulley bearing, bad motor mount, noisy alternator bearings, etc. and spark knock. knock sensor codes are set when the computer has retarded the timing as far as possible to compensate for ignition ping (Spark Knock) and the noise still exists.

With that said, here are the instructions.

Remove the Intake Chamber assembly.
Disconnect Injector connectors.
Disconnect the heater hose from the Intake Manifold.
Remove the 9 bolts. 2 nuts, 2 plate washers and Intake Manifold assembly.
Remove right hand engine mounting stay and water outlet.
Disconnect the following hoses and connectors:
Radiator inlet hose.
Engine coolant reservoir hose.
Engine Coolant Temperature Sensor connector.
Engine Coolant Temperature Switch connector.
Ground strap connector.

Remove the 3 bolts and right hand mounting stay.
Remove the wire band.
Disconnect the water bypass hose from the inlet housing.
Remove the 2 bolts, 2 nuts, 2 plate washers and water outlet.
Remove the 2 gaskets.
Disconnect the Knock Sensor connectors.
Remove the Knock Sensors.

I don't know what engine you have. If it is the v6 then you probably have the death knock my v6 just did that last month! a new crate motor cost 1200$ and put it in your self.

Usually the knock sensor is locate on the side of the engine block by the pan rail

For the 4.3 liter V6 engines it's 1-6-5-4-3-2, number one is driver's side front on the distributor and rotation is clockwise. Number one cylinder on the engine is driver's side front, number two is passenger side front and the rest follow the same pattern.

trying to remove the ignition from my steering column having problem getting the turn signal switch from the column

tps sencor or maf sencor

Check for a 5 volt reference signal at the wiring to the knock sensor. With key on engine off one of the wires to the sensor should have 5 volts.

if it is not mechanical try your anti knock sensor. i had one go out on my v8