Ive got a 1996 Chevrolet Silverado 1500. Whenever you first move the truck after starting it, it will make a short grinding type noise or rattle. It will only do it once, right at the beginning, and the ABS light will come on. Everything works fine and we cleaned the sensors and dont everythiong we thought off. Does anyone have ANY ideas or suggestions to this probelm, any help or ideas are great. Thanks