4L80E strange behavior..

[caddy]

I´ve got 1995 6.5 turbo diesel GMC Suburban. 230000 driven. I´ve owned this wehicle for two months soon.
Stange troubles appeared after driving few hundred miles. (Means I´ve driven few hundred miles with that now) Tranny does not work as it should. http://www.dieselplace.com/forum/images/smilies/mad.gif When driving ~50mph the tranny can´t decide which gear to use.. lock on and off.. And wehicle moves then really sticky, does not matter if it´s cold or warm. Revese sometimes does not react to accelerator pedal and sometimes it works fine. Is this kinda solenoid or sensor problem or what? There is only one trouble code, 36 (injection pulse width error(time long)). Does it relate to this problem? PMD/FSD is new and remote mounted. Fuel, oil and air filters are new and motor oil of course. Tranny oil is still the same, what there was, when I bought this Suburban. Oil level is allright.
I had 1994 6.5 ext.cab before and it moved much slicky with no this kinda problems ever.
Any ideas??

My english is not so good, but try to understand me. http://www.dieselplace.com/forum/images/smilies/redface.gif



I thank You beforehand!

Juho From Finland

[caddy]

Now I´ve changed trans oil and filter. Oil was really dark, but there wasn´t any metal or other material in oil pan.
I noticed that accelerator pedal have sometimes problems with front gear too.. Engine ran only idle and does not react to acc.pedal. There was a little uphill and that is why truck does not moved forvard even with idle.
This is not trans problem anymore.. There is still no other trouble codes with 36. http://www.gm-trucks.com/forums/style_emoticons/default/banghead.gif