Help??
 

So i left the house to today like normal and when i pulled out onto the street my truck staring lunging???? I noticed this was happening between like first and second (auto) after about 25 or so i ran normal. i put the programmer back to stock and still if im going slow it like jumps. Or if i hammer it it redlines takes a sec then goes. ANy possibilities maybe torque converter???? I'm not sure any suggestions would be appreciated.
ThanksSkeet:j:

Could be the converter. May be the valve body going bad as well it might be holding pressure.

Use some of you poker winning and get a built tranny.:D