First the stats: 2003 Dodge Durango 5.9L 4wd 46RE trans 77k miles.<br /><br />I don't know when the last trans fluid/filter change was done, on the list to get done this month. When first getting going in the morning the vehicle will shudder and the trans will not shift into higher gears without reving to high rpm's then letting off accelerator. This just started a couple days ago the only other oddity that I've noticed was the fact that it stopped once I switched the overdrive off. <br />Any ideas or thoughts are appreciated.