Engine/Transmission (1998.5 - 2002) DTT transmission... 1-2 and 2-3 shift problems

[PCrable]

Hi All,

My DTT transmission has recently started to have some rough shifts from 1st to 2nd and 2nd to 3rd.



I figured it was overdue for a fluid change, so I drained the pan and converter overnight. I then followed the procedures in the service manual (as best I could) for adjusting the front and rear bands. After the bands were adjusted, I filled it up with Valvoline ATF +3 fluid.



Well... the shifting problems didn't go away.



On the 1st to 2nd shift, it will almost seem like it hunts and it shudders/bucks when shifting under light go pedal. If I just let the truck idle and take my foot off the brake, it starts surging when it gets to the 2nd gear shift (vroom, vroom, vroom). If I put my foot into it, it doesn't feel exactly right, but it's not as noticeable.



The 2nd to 3rd gear shifting seems to hunt/shudder some too, but not as bad.



Any ideas ? I'm pretty sure I got bands correct, but it still does what it did before my change.



Thanks,

--Phil

 

[fox]

You need to call Bill, it will be correct and free advice!!



Why post it here?

 

[OL RATLR]

shift problems

Call-866-504-4002 for the Man!Oo.

 

[Stefan Kondolay]

I looked up your file and see that Bob did your install last July, I wish you had called either DTT or Bob before you went and did your service, we could have given you a hand. Usually when the transmission is hunting it is electrical, you will be diagnosing for solenoids or sensors not oil.



Unfortunately you will have to drop the pan again to do so.



For those of you out there reading this, aftermarket or OEM trucks, here is a tip. For the above symptoms described by this customer do not look to oil first. If oil was the issue you would be experiencing softer shifts than usual.



Give us a call and we will give you a hand.