the abs brake light popped up on my dash.I thought it might be the sensor on the differential,I replaced it but the abs brake code still comes on.Is there a drivability cycle that has to take place before the code is erased from the pcm memory.Thanks,steve

 

i don't know. but on my 01 ram, the pcm can be reset by disconnected the negative battery cable and turning the ignition to start for 30 seconds.