I replaced the rear axel and replaced the abs speed sensor on the axel and now get these errors in the abs system tried clearing them but they pop back up with in a second. I replaced the sensor twice.

 

If your truck is an 03 you need in there 3rd gen section. 4 wheel ABS?

 

Thats talking about the left front sensor. Nothing to do with rear axle replacement. If you have already replaced the sensor, check the tone ring. Any teeth missing? If that's ok, check the wiring.

Moving to third gen section for ya.

 

Hmm it is a rebuilt axel but the first code says rear sensor open what would.make it open

 

Ah, missed that one.

Open means incomplete circuit. So, either it isn't plugged in good, the sensor is bad, or you have a break in the wiring somewhere.

 

That be hard to do to check the wires have no idea where they go in the harness to ohm them out. To the other dude it is 4x4 so the rear sensor is NC? Because I replaced it twice so.dont think the sensor is bad I'll try and find where the wires are dont know where to get a wiring diagram.

 

not sure if it is 4 wheel abs it is 4x4 though.

 

Is the sensor mounted on the differential or near the backing plates?

 

The differential on the top

 

Just ensuring...you have driven the truck since doing the axle replacement?