If you work your CTD any at all, you'll have to adjust your bands around 30k. What you'll notice is a lunging at low rpm's in 2 gear, it'll feel like it is shifting in and out of gear. You have two bands on that tranny, (48re) 1/2 and reverse, only the 1/2 is externally adjusteable. That is the one you probably need to adjust. On the drivers side of the tranny just above the pan you'll see a torx head with a jam nut, back off the jam nut, the torx should tighten freely by hand, tighten by hand until it stops, torque to 72 INCH POUNDS, NOT ft lbs. Then back off 1 3/4 turns, tighten jam nut, being sure that the torx bolt doesn't move from its 1 3/4 turn out position. I don't want to step on any toes here, but adjusting your tranny bands is a MANDANTORY service, and not doing so WILL effect the life of your tranny. If you refer to your owners manual it shows it as a required service interval at 30k along with a new tranny filter and fluid.