Mine did this two years ago it that rear sensor in the rear diff it was easy to change one bolt to pull its on top passenger side in the diff your speedo will go out next

same thing with mine. both lights came on, then i lost the abs all together and could get the truck to lock up and slide :scare2:, and then the speedo went to zero and stayed. changed the sensor in the top of the rear diff and it fixed everything. took it to the dealer to get the codes read first though.

does your cruise work?

im going through similar problems right now, i changed the rear sensor, and it didnt fix any of the problems

https://www.dieselbombers.com/24-val...r-problem.html

Unfortunately it is not the rear diff sensor. I just got back from the dealership. They went through the system. My ABS pump seized and took the ABS controller with it. They want $1300 to fix it. Why does this stuff always happen when you are away from home? When I get home I am going to have my mechanic check it out. He only does the 5.9 gen 1-3 and everything on the trucks. I will keep my fingers crossed that he can do it cheaper.

Umm yea that sounds pretty scarry :scare2: I would definatly get a 2nd opinion especially from someone you trust. When i was wrechin for a living I only maybe changed a couple of abs pumps and thats over 11yrs and a hand ful off abs modules.

I have a 97 and both the brake light and abs light came on i couldnt figure out what it was. I fixed it one day when i bled my back brakes some nasty black fluid came out and the lights have never came back on. I dont know but you might give it a try might work for you.:tu:

Whenever the ABS light turns on, ABS function seizes to exist.

Once you've checked tire pressures, fluid levels, and ensure no leaks and a proper mechanical braking system is in place, check one is the sensors. They are typically a pulse generating sensor. Unplug the sensor at the wheel, turn your Digital multimeter to AC Voltage, red on one side of the plug terminal, black on the other. Now have someone give the tire a good spin. As long as these trucks do have pulse generated sensors like every other vehicle on the road, your voltage should increase as wheel speed increases. If you do not get the reading, clean everything and check the reluctor ring to sensor gap.

All this being said, I am unsure of the details with the Dodge truck ABS system, but this procedure is "generally speaking" with ABS systems.

Good luck! :)

I will check that out. According to Dodge my ABS pump seized and that caused a short in the control module.

could doing a burn out cause this cause it happened to me a day after i showed my buddies how a real truck does a burnout ..speedo doesnt work till 20 mph too