Bought used 84,000 o3 libery, I've put 20, miles on it, 1/2 hiway , made round trip to Austin, tx from Jxn, ms...smoooth, loved it..AND THen..trans. started slipping, interior lights will not go off, (tried everything) ,won't go in reverse now, I know, I know..trans,...but JEEPERS, I had 3...