Greetings from across the big pond in Scotland, west coast near Oban. We have a 2002 Chevrolet Astro. The abs and parking light will not stay off. I have tried it without moving the van thinking that the vss sensors would not be active and would not cause the fault. Some times they will go out on start up but come back on after about a 7 mile drive. I have removed and cleaned the 2 front wheel sensors and the sensor at the rear end of the transmission case. The next thing I want to check is the EBCM ,, I dont see it in the engine bay. I want to check the grounding for that unit, any help to find it and deal with problem would be much appreciated