hey guys i really need some help, i have a 1993 bravada and i can not find the knock sensor, i looked every where. tryed the other places there say its on the bell housing, really need help

on my 92 its on the drivers side head right between the second and third spark plugs as viewed from the front

It's right next to the rearmost drivers side sparkplug.
The connector is the most fragile piece of plastic you've ever handled and will very likely break if you touch it. I got close to mine while changing sparkplugs and broke it all to chips. I now have a pieces of vacuum line holding the wire inside the knock sensor socket with no problems for about 5 years now.

http://i131.photobucket.com/albums/p288/Clunk_/Image012.jpg