k3500 polar
Newbie
Just bought a 89 k3500 454tbi single wheel. Was pulling a trailer when I had to stop then when I went to go again I heard a pop and now it won't go anyway. The fluid is good and when you change into gears you hear the rpm drop a little but it still won't move. When you go put it back into park it makes a horrible grinding noise. I just dropped the pan and no chunks or anything and the tranny fluid looks bright red and good. What the heck is going on?! Do I need a new tranny? Could it have something with the transfer case? Also I towed it about 1/2 mile while it was physically in the position "park".