Just bought a '79 K5, 350 4x4, Auto transmission converted from manual. Had sat at least 6 months. Didn't run, trucked it home, installed starter, got it going. Had to put 3 quarts of transmission fluid in it. It ran OK considering, drove it a few miles, then the teenagers drove it in the driveway, and the auto transmission and the transfer case both started grinding when they shifted. They were the first to move the transfer case lever. The auto trans. would grind, even shifting into park, but the truck would roll in park. The transfer case lever ground some too. I moved the transfer case lever some, and managed to get the trans. shifted into gear, and it seemed to drive OK. Then I parked it. This is (obviously) my first 4wd - can anyone tell me what's going on? The trans. case lever has lo lock, lo, neutral, hi, and hi lock on it, but it is hard to tell what position it is in. Thanks for the help. I learned a lot already from reading your posts.