I just purchased a 2003 chevy silverado 1500 4x4 with quadsteer, the pickup would not start the next morning. So I let it sit and later it started right up. The radiator went out the next morning so I had it replaced. It has done fine since then. I got up this morning and it will not start. All lights come on, but there is not a single sound indicating that the motor wants to turn over and the motor light comes on the dash board. It also says I should service the 4wd. Can you guys help me out? This has all started within the first week I purchased it. Of course there is no warrenty on a used one.