There are 2 Knock sensors on Chevy Blazers.
The sensors are located on either side of the motor.One of each side of the motor.Its below the heads, in the center on engine block.
---
The car will not start?
Car will not crank?
Car has no spark?
How to troubleshoot car battery?
How to test starter solenoid?
http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html
--------------------
How to test cars starter?
http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html
How to replace starter in car?
http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html
The sensors are located on either side of the motor.One of each side of the motor.Its below the heads, in the center on engine block.
---
For more car related problem troubleshooting:---
This are the sections, you can go through and click the link to read its troubleshooting.
---------
The car will not start?
-----------------
Car will not crank?
-----------
Car has no spark?
-------------
How to troubleshoot car battery?
-----------------