I have an '02 Dodge Ram 1500. Just recently, the brake and ABS lights came on while I was driving. Also, the spedometer was jumping around at about the right speed (this causes MAJOR gas milage problems when I use cruise control!). I just figured it was the rear vehicle speed sensor because I had a similar problem in a Dakota and that was the problem. So, I replaced the VSS and the problem persisted. The needle of the speedometer keeps jumping around and my brake and ABS lights came back on. Any thoughts??? Any help at all will be appreciated. THANKS
Zach

 

look for water in your ABS module connector. If you find it, dry it out, and then put some RTV sealant on the ground screw mounted to the hydroform fender support right above the ABS module. It is a black/green wire. Seal the whole screw and eyelet.

 

I had the same problem, srenken is dead on.