My 1995 chevy van, the abs light comes on and the transmission will not shift at all. I have changed the speed sensor in the transmission with no luck. The speedometer will not work either. The systems seems to tied together. Any ideas on this one.

. Are you sure your ECU is good? Check output voltages on things like the MAP Sensor and Throttle Position Sensor.

. Check all under-hood and under-dash fuses with a test light or multimeter.