Hard/short shifts

[Silver GT]

95 psd e4od 4x4. I got the truck a few months ago and the (old) guy that I got it from said it shifted hard and always has since he replaced the trans in 2001. I did filter and flush and drained the converter. I dont know anything about the trans other than it was replaced and the converter is painted blue (prob rebuild). filter and fluid change helped a little but not much.

When Its cold out side and i let the truck warm up for 5min or so then take off it shifts like a new truck, nice and smooth and shifts when i should. Now if I let it warm up for say 20min or after about 5min of driving it it shifts super hard. It will kinda drag out 1st gear and slam 2nd, then short shift 2nd and hit 3rd and converter locks instantly and lugs the motor. It will be in OD with the conv. locked by the time i hit 40mph. It does this weather im driving easy or stomping on it. Most of the time when its in OD with the conv. locked it wont downshift for hills etc. unless i really get into it.

Like i said when its cold, It shifts PERFECT.

What do you guys think? Oh and no codes or blinking lights or anything. the truck has 240k and no idea how many miles on the trans. No slipping at all.

[Silver GT]

Anybody have any ideas?

[jeepzj94]

Mine does the exact same thing. I really want to get it figured out. No slipping or codes or flashing OD light on mine either.

[Silver GT]

bump, trying to figure this out but im lost.

[blackvelvet]

my 95 does the same exact thing, new tranny 2000 miles ago.............any help here fellas?

[StrokinNSmokin6.0]

Same issues here.. I now have 90k on the trans since rebuild and it has been doing that since the day it was rebuilt. After it was rebuilt I took it right back to the shop and the guy said it was the nature of the beast and I ve had no issues in 90k miles.

[Silver GT]

That is pretty much what happened to the PO of my truck. Had it rebuilt, shifted hard after and they said its "normal" and theres nothing wrong with it. I say it didnt shift like this when it was new, so something can be fixed. I havnt really had the time or the money to mess with it lately, but still looking for answers. Im glad im not the only one with this problem.