Knock Sensor

i know i may sound stupid for asking this but does anyone know where the knock sensor is on a 90 grand am im havin a hard time finding out where it is

My book doesn't show one on a 2.5 but if you have a 2.3 then it should be located on the driver side upper engine area below exhaust manifold. hope this helps.

yeah its a 2.3 quad 4 thanks alot strangely enough this is the first actual problem ive had with the engine other than that alternator ive heard so many complaints about the heads in the quad 4's but i havent had any problems with it and it has almost 160 k on it