[quote author=acoustic_axe link=board=13;threadid=17633;start=#165026 date=1059433882]<br>Hi all,<br> I just got back from a trip last nite, truck ran perfect the entire time. Get in it this morning and the abs/brake lights stay on after starting. Shut it off and restart same thing. Slame on the brakes and sure enough it skids.<br> Comeing home from work, abs/brake lights are still on. I notice the speedometer isn't working, setting on 0 till i get over 25 mph or so then it goes to working.(Doesn't seem to read the correct speed though), Truck speed drops below 20 or so and speedo goes to 0. <br> Looked for the computer readout code procedure but the link i found didn't work. Any ideas would be a help. <br> Thanks.<br>[/quote]<br><br>Sounds like the ABS sensor in your rear differential took a hike...

 

... BUT, *do* check for a simple solution, like a loose connection - especially right at the sensor itself...