Kenworth auto transmission problem

There’s a certain bulletin to fix this problem

this is it:

https://www.eatoncummins.com/conten...-and-fuller-advantage-FC19-64-67-taib0883.pdf


Be safe out there

 

Hi,I have the same problem with my 2010 kwt660,has a ultrashift on it
Xy is new,actuator, tcmu,clutch
My question is does this procedure work for this model also?
Thank you

 

My 2020 t680 with auto is showing this fault. Has anyone figured out what this is?
I can't seem to run it down. It's doing what alot of you are saying. Gives this fault then when it goes into n it won't go into d or r until I switch it of and restart

 

I have the same problem on a 2020 t680

 

@Mhfierro Did you ever find out what it was?
I have same truck 2020 T680 and it’s doing same thing

 

Fixed my 2020 by putting a new right hand shifter on. Very easy to do. Bad thing is it runs about a grand.

 

That's nuts. Any fuel savings you might see between the auto and manual are wiped out with a single repair.

 

I have 2020 t680 with 533K miles. It started today by not going into a gear, having hard time switching to gear 9 and up, not getting out of N, flashing gears 8,9,10. Then message in yellow to stop for service or whatever I can’t remember precisely what it says, then red message to stop completely to prevent any damage. What kind of crap those transmissions are ? Mine is Fuller 12 speed.

 

X-Y shifter.. known to start having problems after 550k. Clutch actuator/clutch.