So I started up my 98 2500 24v the other day and the ABS and the Brake Light were on and to go with that my speedo doesn't start working until 20-25 MPH. The brakes don't feel any different. I searched the threads and couldn't find anything with all these symptoms. Help!

 

probly a rear diff sensor, you can have your CAB module scanned for a better idea of whats going on

 

Mine is in the wiring on the rear diff sensor, hard hit a bump sets it off.

 

I have a similiar situation with my 01.5 (rear disk) mine was comming on and off, for about a day. now it stays on and my ABS does not work at all I tried pulling the fuse to see if there was any difference their wasn't I dont really care if I have ABS because I always try to unhook it in some of the sports cars i ve had, but the lights are annoying and I dont wanna have anything get any worse.

 

Thanks for the help I'll let you all know when I get a chance to check the sensor and the wiring