where is the cam shaft position sensor located? asap thank u

It was behind the backside of the crank......thankx for replying (btw, its a 92 bonneville, ive written in here before saying how my car breaks down alot) but yah, he found it .....code 58 came up , which was anti theft which is controlled by my key...so he'* thinking it might be my key.

Thanx for replying....he said the code came up 58 meaning anti theft ....is there a way to bypass that? disconnect that? (btw, my car is a 92 bonnevile ..Ive had problems with it stalling which i posted a few months ago)