c4500 wont go over 40mph, speedo reading 85
 

I have read the current post that is on this website and there was no solution at the end. I have replaced the cluster due to inop gages and still doing the same thing. Does anyone have any experience with this problem. I know its not filters, not injectors. It has to do with the computer governing the truck at 85. I would appreciate any input on the subject.

speed sensor in the transmission, the second one...its tellin the ecm that the truck is going 85mph so its at the speed limiter