where is located the knock

hello... ok me again..
blazer 4.3 Z
can anyone tell me where is the knock sensor located?
and the cable that i have to disconnect to set the time..

i need a picture. because im a real stupid in this things..

thank you..

Nalgman

hello... ok me again..
blazer 4.3 Z
can anyone tell me where is the knock sensor located?
and the cable that i have to disconnect to set the time..

i need a picture. because im a real stupid in this things..

thank you..

Nalgman

Year would help.... You will have 2 of them. 1 is on the drivers side block just above the 3 and 5 plugs, the other will be in either the same location on the passenger side, or behind the passenger side head.