I have a 92 chev s10 auto 4x4. I use it only to plow my 1000 foot driveway. I have used it for years. Today we had 22 inches of snow and the 4 wheel drive would not work. No matter where I put the 4 wheel drive selector only one rear wheel would spin, no front wheels would move. I have had the truck since in was new , no previous 4 wheel drive problems. It is sitting in 22 inches of snow so I can not get in into the garage until some snow melts. Any suggestions!!!