I have an 03 2500HD. I haven't had any problems with it until today. I was driving down the road and it just died on me. I was prompted with the 'Service Brake System' and the 'Low Coolant Level' in the DIC, but I checked the coolant and it was fine. I've had it in to check the brakes recently and they couldn't find anything wrong and chalked it up to a bad brake sensor. I tried to start it and nothing, no sound nothing. It wasn't trying to turn over anything. It was almost like it was in gear (automatic) and was trying to start. I cycled the gears and made sure it was in park and didn't change anything. It was just dead right there. I checked the battery connections everything was good. I ended up having to tow it to a shop, but they were closing so now I don't have any idea what's going on. Any help would be greatly appreciated.

Andy

 

There's really no telling. It needs a scan tool hooked up to it to read what codes have been thrown.

 

Found out what it was. My fuel pump was pulling extra amps and it burnt out my ECM fuse. Wasn't too bad of a fix once they diagnosed the problem.

 

Cool. Glad it was a easy fix. That is rare. But may I suggest lookin into changing out the fuel filter as that may contribute a pump needing more juice for more pressure.