2006 Pete 387 speed sensor issues

Hey everyone just a quick question does anybody else know if this truck would have two speed sensors on the back of the transmission? my odometer was bouncing around all over the place so I went ahead and replace it but when I got under there, I saw an identical looks like a speed sensor directly on top with the same clip as what I was replacing but there was nothing to it and I didn’t see another harness plug-in laying around anywhere.

 

OK I replaced the speed sensor and it’s doing the same thing… Any ideas?

 

Just when I’m moving. So it looks like my speedometer itself has gone bad. Honestly never saw that happen before. A tech looked at it and said it shouldn’t ever read below zero when it’s turned off. If it does it’s bad. I’m not sure how that affects the cruise… I thought the cruise ran off the sensors.

 

Ok… not the speedometer. Still no engine break. No cruise. And when I’m on the peddle trying to remain a constant 70 I’m getting almost like a pulse surge. I’m at a loss what to do. Any ideas? Is it the ecm going out??

 

New sensor. New speedometer. Still having the same issues. When I try to keep a constant speed on the peddle I’m getting a surge , almost like a pulse.