i know that the 42le will not shift to OD until the fluid is at a suitable temp to avoid damage. the only thing i can think of, though im not a transmission expert by any means, is that the fluid was too cold and the pump couldn't make enough pressure. if the fluid is 2 years old, i think your best bet is to go ahead and change the filter and fluid and see what happens.
then again, 10 miles at 30mph is 20 min, it should have been warm enough for full operation in, at most, half that time. who knows.
Last edited by ksa8907; 12-08-2010 at 07:28 PM.