check the fluid, if it's kind of brown and burnt, you probably have a pressure transducer issue. it will feeling like it is launching in second gear. If this the problem, replace the transducer (56028196AD) and flush the system. hope this is helpful
Every newer CTD I've been in acts like this (with 48RE) ... mine is worse than most. Try plowing all day having to do this thousands of times each day ... brutal. Come to a complete stop and hold the brake FIRMLY is the only way to cushion it all.and also noticed when backing out of parking stall when shifted from reverse to forward, there is a harsh engagement (no cushion). Is there any adjustment to the bands on this transmission.