Where exactly is the abs sensor located on my 99 dodge 1500 4x4?

Hi Javier, Im AL the owner of Big As Auto Repair

Javier, ABS Module is located under the hood. It mounts to the side of the hydraulic brake system. Hope this helps and please visit my auto-repair website and check out the satisfied customers and give me a shout while your there. http://www.bigasautorepair.com/

My neighbor has a 99 Ram and his abs light wouldn't go off. As a brake mechanic myself. I replaced brakes all around , in which it needed, light still on so there is some kind of sensor on top of the rear end. Replaced that and still on. The only thing that is left is the block at the master cylinder, that runs about $300.00, so my neighbor don't want to spend that much. but that is about the only thing left.

the solution is only factory service and repair manual which will guide you step by step with diagram with the help of manual you can also locate what is the exact problem you can get the manual from the given link http://toolsnyou.com/

Check brake fluid, also could be wheel speed sensor,try washing the wheels out real good and be sure to look behind wheel to see if any wires are hanging loose.
If not you need to have brake system checked

Did the speedometer stop working under 25MPH? If so replace the speed sensor on the differential "hog head". Its located on the top.

The vehicle speed sensor is bad.

you have an code stored in the abs module.likely a bad rear wheel speed sensor.as it runs the speedometer.check wiring to the sensor.it is located on the top of the rear diff housing.hope this helps.

you have a problem with a wheel speed sensor or abs ecm/pump motor have the code checked to see where the problem is. you still have normal brakeing just no antilock brakes

sensor in rear diff may need replaced

Speed sensor located in top of rear diff is probably bad, It sends a signal to abs module for abs, it also is used by pcm and cluster for vehicle speed.Sometimes rear diff mechanical problem can damage the sensor. Trans sensors have nothing to do with speedo or abs light.