Bro!!!!! We need more videos from you. Perfect!!! Very good explanation and straight to the point. Left me wanting more. You should have been a teacher. Thanks!!
Man you really lifted my day dude. Thank You for the confidence and taking couple minutes out to say something nice to someone. You never know how big something so simple like that can change someones direction for the better. Thanks
I've running my 2008 389 with this tranny for the past 12 years, and I must say they are great. The first time I changed the XY shifter at about 600 K when the clutch was being replaced, just wanted to make sure that every thing remains operating smoothly. Later at 858 K , I replaced the tranny with a reman, and at 1.1 Mill I changed the clutch for the second time. Once the clutch gets to 500K you better replace it while at home terminal, or you'll be ripped off on the road. Now I'm near 1.2 mill and it's time to get a new XY shifter rather than having bad dreams 😊. The key is, to do PMs as often as possible when you're home, or have bad brake down stories to tell.
We have 2 kenworths on the farm one with a 10 speed and one with this ultrashift if I can get it dialed in I think I'm going to really like it more than the 10 speed, even no more than we drive them, if I drove everyday like you I think I would really like it. I'm new to this transmission has it held up well for you?
I have a 2005 Freightliner Century Class S/T, Detroit 60 series smartshift with the clutch pedal with no fault codes . When I first start it ,then put it in gear it shift fine I can drive for hours. When I need to take a break turn it off . then try to get it to go into gear it won't. I would have to sit for a while and then it will go into gear and drive for hours. Do the XY Shifter suppose to display fault codes? Please can someone help me
Hi David, I would definitely download the PDF file on that transmission. I don't have a link for you but it shouldn't be hard to find it's all over the Internet. The whole service manual is written in plain English In pretty easy to follow and diagnose your own problems. As far as a reset, the transmission does a sensor check every time it powers up and powers down. There are wires going directly to your batteries that are the main power supply for the transmission "usually". Eaton Fuller did not want to rely on the truck manufacturer to supply the power needed "trust issues, load requirements". There are wires that go into the truck for all sorts of other functions communication, indication, gear selection, but the power wires go directly to the battery. I believe there are 2 And they are fused and can be followed right from the transmission controller to the batteries. If you intend to keep the transmission I would strongly suggest you read the introduction In the manual. After I did I knew I was keeping this transmission as long as possible. It will save you a ton of money.
I have the same transmission and was told I need to grease my throw out bearing. The mechanic I use to do my PM's couldn't find the grease fitting. I removed the bottom plate and couldn't find any either. I was told their were three but I couldn't find even one. Any advice? Thank you.
Great video. Maybe you can help me. I've got a gen 3 Auto-Shift that I bought used. About 375,000 miles working in oilfield. Last week we had it stick in gears as we were running down the road. It would flash the gear and an F. Also, sometimes when you stop and try to go into neutral...it will flash N and F. And sometimes if you try put it into gear, it will flash the gear and F. It's pretty annoying to say the least. The two codes I'm seeing are Transmission power supply...comes up many times but is an inactive code and can be cleared but comes back again. Also getting rail position sensor code sometimes. Any ideas what to tackle first?
bababa39 Chan the harness. It has bad connection on some of the sansors. $200 is the cost. And you change it from the top as this video is showing. Also change that sensor. (I bet you the connection to that sensor is bad that creates all those problems)
jasminko hodzic could be the harness...tho it is only a couple years old. We did have it happen again about a week after I left this comment. My driver remembered that another guy told him to tap the XY shifter a few times. So he reached down by the back of the engine and tapped it a couple light taps...and it started clicking and went right into neutral and shifted great again. Then it locked in gear momentarily driving down the road one day. I heard an air sound by the back of the engine. It was an airline that had the Eaton stamp on it with a pinhole that would leak sometimes and sometimes not. So I fixed that and worked good again since but we haven't drove it a whole lot since then as we had a head gasket going bad and it's in the shop getting a motor rebuild now.
MARCIN CWALINSKI there is an inertia brake which slows the input shaft down when making an upshift. Usually you only hear this while making Fast up shifts. If you proceed very slowly through the gears you may find you won't hear it. At any rate if we're talking about the same sound it is completely normal.
Can somebody help me ?I have an issue with the shifts, when I stop in a light for example and when I want to move the shift doesn’t go through, I have to wait from 2-15 min until the shift goes through.Would you be able to give me a clue of why is this happening???
retrieve active code and see which number it shows and look up the fault code, it's most likely one of 3 main sensors cause they are very sensitive or it could be the shifter too
My eaton 10 speed auto is only acting up in 1st and reverse. When I let off the throttle it feels like I have put on the brakes. Some times in 1st it hesitates to get going. Never displays any codes. Also some times at stop lights you can feel a slight surge like if you were driving manual and letting the clutch out slightly.
mrjgueret it displays "1st gear from neutral, it up shifts and down shifts good. the problem is when it does not engage any gear it happens just all of sudden and the dash shows the gears just bouncing it does it on any gear. But it doesn't show any codes.
Change the harness, with all sensors to be sure. sounds like the sensor closer to the input shaft is out. If that sensor is out transmission does not sense any input speed from the engine. The other speed sensors have different roles.
Hello everyone if any one had same issue om kenworth t680 2017 paccar mx 13 Eaton transmission fault code comes on dash board sats Transmission fault ,repair required find repair service . also on gear service light blinks .. after shutting off and waiting few min and starting normal. any suggestions or some one have some issue and fix it ? thank you
2007 Freightliner Columbia. I would imagine all manufactures are still doing this instead of having a "manual floor" with hole for stick vs "auto floor" with no hole.
Hi. I have an 07 Freightliner Century with an Eaton fuller smart shift that won't go into neutral it keeps flash 1 F so am un able to start it. Any thoughts on what may be wrong?
Guys I put in a manual transmission put in an Eaton fuller manual 10 speed now it runs without any problems. The aftermarket transmission plus other parts and labor it cam to 6K. Thanks for all your concerns and input.
Well there is a high low air operated actuator on the back of the transmission above and to the right of the output shaft that controls your high low range ork. Two things can go wrong with that the first of which is that it needs to be rebuilt with new O-rings/seals. For over-the-road drivers I would say if you haven't rebuilt it in 500,000 miles, it needs to be done. Secondly there is an electronic solenoid valve that supplies air to make that actuator go back and forth. Never seen one fail but it could be possible. I replaced mine at 1.3 million just in case. I would start there because you have normal shifting every other gear
Please help ! Issue i have is when you are stoping little bit stronger, sometimes just stop normally, transmission dont know what to do, and he wil not put in gear, D is blinking and making beeping noice.. then you have to reset transmission by turning truck down and start again. Sometimes even that does not help, i have to disconect batteries on the middle of road and wait few min.. he shift great while driving, but when you are stoping he get confused.
Hello I have exactly the same problem with you and I am trying to find a way to figure out the problem but so far nothing even though I have so much money to fix this issue.Can anyone help me if you figure out for your own truck?
Kristi Lika I am having the same issue but I was told that my clutch is bad. I’ve also been told that it’s a power issue, bad ground or broken ground wire as well as the xy shifter could be bad. Change the wiring harness from the ecm or data link cable to the transmission! Has anyone tryed these suggestions and got good results?
dparkersr I have the same problem and it was my clutch but now I can’t start my tractor with the key. The computer is storing a low voltage code, I delete the code but I comes back when you turn the tractor off. I’m going to try changing the wiring harness and maybe some sensors today to see if that fix the issue. I’ll update after I’m done.
Good information I have eaton ultra-shift 10 speed 3rd gen automation. I am having problem. hard shifting from 6th to 9th gear up shifting. inactive code 21 , 73 ,74 please help
Need help my truck freightliner cascadia auto trans smart shift, shifts very hard from time to time, also it feel like transmission brakes while slowing to a red light and while stopped at red light it feels like drive shaft keeps moving and jerks the the truck, after I tried pulling off truck feels stuck in gear and it will eventually take off but jumps really hard. Need help finding problem please thank you in advance.
Its junk! Got one in my garage truck. It keeps getting stuck in gear 8th, 9th, 10th and reverse! My shop cant figure out how to fix it, I have to reset the dead man switch several times just to get it to release gears. JUNK!
Hi. I recently purchased a Peterbilt 579 with an Eaton fuller advantage 10 spd auto. It runs great. The tractor has 520K on it Do you think I should proactively change those sensors? I'm just trying to stay ahead of problems. Ty
I did find that when I had to change mine they were extremely difficult to get out because the first series of the sensors had flat sides which bound up with rust. My tail shaft sensor actually snapped off in the bore. I was able to break it up and pull the pieces out. The new sensors whether or not you have them I don't know, have recessed sides which I believe is an attempt to keep them from locking in the bore. The original ones also weren't as lubed up as they could be which would protect the bores in which they sit. They are only like $45 a piece and even if you were to pull your old ones out and re grease them and throw them back in might be a good idea. My big recommendation for these is treat your wiring harness with respect. Download the PDF for the transmission and it will show you where all the wire ties need to go. Make sure none of the wires wiggle. loose wiring will cause early failure. Completely immobilize the entire harness. Many technicians never tie wrap anything back. I have my original harness at 1.3 million miles because I took care of it. Leave it loose and it won't last more than a couple hundred. My sensors went to about 900000 but it was a pain in the ass to get them out. My XY shifter usually lasts about five to six hundred thousand. The XY gear positions to start failing are 9 and 10 because that is where most of the shifting happens or those two areas get shifted between the most I should say. Your rail position sensors are the other ones that you may have to change before you even have to change the XY. If you bring it into a shop they probably will just replace the entire XY instead of the sensors. I can tell you that the diagnostic feature in these transmissions will tell you everything you need to know when you have a failure. It is awesome. Download the PDF and learn how to pull the codes and read them through the shift indicator. Unbelievable transmission good luck with it. You will not be disappointed once you learn it.
@@mrjgueret My truck has an Eaton auto shift, and during up shifts when it gets to 7th gear it takes a second attempt, and during down shifts from 10th to 9th it takes a second attempt. Also if I stop the truck real hard with a load or use the engine brake the transmission will get stuck in gear and won’t shift unless I turn it off and turn it back on like it was in limp mode. Can you help me diagnose it? Thanks
@@sstevocamaro I usually don't tell people it's their x y shifter immediately. But whenever I hear a 9-10 shift problem It's usually the xy shifter because 9 and 10 are the most frequently changed the gears. I'm not sure what's failing on the XY as I've never taken them apart but all I can figure is it may build flat spots on the armature of the motors between 9 and 10. Now I don't mean garbage truck or local delivery truck when I say 9- 10 are the most frequently shift shifted gears. Obviously if you're over the road you know which gears are shifted most. You're in 10 riding along and on a grade it always shifts to 9 and then back to 10 and so on. If you have no other transmission codes and it's acting wacky trying to shift it could definitely be the X Y if you haven't changed it out in 600,000 Mi you definitely need a new one.
I have a 2018 international LT and mine was acting up too mostly down shifting from 9 gear to 8. It wouldn't do it all the time but it was annoying. Finally took it international and they replaced the xy shifter and a harness. So far its running good you can feel the transmission going through the gear way better.
Bro!!!!! We need more videos from you. Perfect!!! Very good explanation and straight to the point. Left me wanting more. You should have been a teacher. Thanks!!
Man you really lifted my day dude. Thank You for the confidence and taking couple minutes out to say something nice to someone. You never know how big something so simple like that can change someones direction for the better. Thanks
I've running my 2008 389 with this tranny for the past 12 years, and I must say they are great. The first time I changed the XY shifter at about 600 K when the clutch was being replaced, just wanted to make sure that every thing remains operating smoothly. Later at 858 K , I replaced the tranny with a reman, and at 1.1 Mill I changed the clutch for the second time. Once the clutch gets to 500K you better replace it while at home terminal, or you'll be ripped off on the road. Now I'm near 1.2 mill and it's time to get a new XY shifter rather than having bad dreams 😊. The key is, to do PMs as often as possible when you're home, or have bad brake down stories to tell.
Best explanation on these trans ever! Good job.
We have 2 kenworths on the farm one with a 10 speed and one with this ultrashift if I can get it dialed in I think I'm going to really like it more than the 10 speed, even no more than we drive them, if I drove everyday like you I think I would really like it. I'm new to this transmission has it held up well for you?
What’s the part number for that input speed sensor? I think my truck has that part acting up on me.
I have a 2005 Freightliner Century Class S/T, Detroit 60 series smartshift with the clutch pedal with no fault codes . When I first start it ,then put it in gear it shift fine I can drive for hours. When I need to take a break turn it off . then try to get it to go into gear it won't. I would have to sit for a while and then it will go into gear and drive for hours. Do the XY Shifter suppose to display fault codes?
Please can someone help me
Are the input shaft speed sensor and the main shaft speed sensor exactly the same ? Part K4149
my auto shift w a clutch is down dealer wants 9k to rebuild it w reman....any suggestions
Where’s that 40 amp fuse at ?
Hello great info. I have a 18speed Eaton. How would I know what part to replace? And how do I reset the transmission after replacing the part?
Hi David, I would definitely download the PDF file on that transmission. I don't have a link for you but it shouldn't be hard to find it's all over the Internet. The whole service manual is written in plain English In pretty easy to follow and diagnose your own problems. As far as a reset, the transmission does a sensor check every time it powers up and powers down. There are wires going directly to your batteries that are the main power supply for the transmission "usually". Eaton Fuller did not want to rely on the truck manufacturer to supply the power needed "trust issues, load requirements". There are wires that go into the truck for all sorts of other functions communication, indication, gear selection, but the power wires go directly to the battery. I believe there are 2 And they are fused and can be followed right from the transmission controller to the batteries. If you intend to keep the transmission I would strongly suggest you read the introduction In the manual. After I did I knew I was keeping this transmission as long as possible. It will save you a ton of money.
I have the same transmission and was told I need to grease my throw out bearing. The mechanic I use to do my PM's couldn't find the grease fitting. I removed the bottom plate and couldn't find any either. I was told their were three but I couldn't find even one. Any advice? Thank you.
It’s on the side of the bell housing. You should see two grease fittings
I have an Eaton ultrashift that's showing a code 51 rail position sensor, would you just replace that sensor or all the sensors?
BLC nc yep just the rail position sensor. it's the one towards the rear of the truck. do that, reset the transmission and you're good to go
I’m getting Fault Code 14 - Invalid Shifter Range Detection
Great video. Maybe you can help me. I've got a gen 3 Auto-Shift that I bought used. About 375,000 miles working in oilfield.
Last week we had it stick in gears as we were running down the road. It would flash the gear and an F. Also, sometimes when you stop and try to go into neutral...it will flash N and F. And sometimes if you try put it into gear, it will flash the gear and F.
It's pretty annoying to say the least.
The two codes I'm seeing are Transmission power supply...comes up many times but is an inactive code and can be cleared but comes back again.
Also getting rail position sensor code sometimes.
Any ideas what to tackle first?
bababa39 Chan the harness. It has bad connection on some of the sansors. $200 is the cost. And you change it from the top as this video is showing. Also change that sensor. (I bet you the connection to that sensor is bad that creates all those problems)
jasminko hodzic could be the harness...tho it is only a couple years old. We did have it happen again about a week after I left this comment. My driver remembered that another guy told him to tap the XY shifter a few times. So he reached down by the back of the engine and tapped it a couple light taps...and it started clicking and went right into neutral and shifted great again.
Then it locked in gear momentarily driving down the road one day. I heard an air sound by the back of the engine. It was an airline that had the Eaton stamp on it with a pinhole that would leak sometimes and sometimes not. So I fixed that and worked good again since but we haven't drove it a whole lot since then as we had a head gasket going bad and it's in the shop getting a motor rebuild now.
Did you ever get this figured out or fixed bcuz I have thy exact issue now
We have the UltraShift HV with Park Pawl on a medium duty. While shifting between gears, there's like a squeaking noise. What could be the problem?
MARCIN CWALINSKI there is an inertia brake which slows the input shaft down when making an upshift. Usually you only hear this while making Fast up shifts. If you proceed very slowly through the gears you may find you won't hear it. At any rate if we're talking about the same sound it is completely normal.
MARCIN CWALINSKI the noise is a squealing sound, kind of like when a bullet goes by in the old western movies?
Where did you get the sensors from??? Can't find them
And dealer has them. They are cheap. About $40 each.
Can somebody help me ?I have an issue with the shifts, when I stop in a light for example and when I want to move the shift doesn’t go through, I have to wait from 2-15 min until the shift goes through.Would you be able to give me a clue of why is this happening???
retrieve active code and see which number it shows and look up the fault code, it's most likely one of 3 main sensors cause they are very sensitive or it could be the shifter too
just find a good michanic someone charge me $7000 still i have same problem so becaureful
Help my ultrashift does not pass gear 5. Do i need to change xy shifter?
How did you fix the issue , not going past gear 5
@@asapjuve2 I changed xy shifter and that fixed the issue. Good luck Akhii.
My eaton 10 speed auto is only acting up in 1st and reverse. When I let off the throttle it feels like I have put on the brakes. Some times in 1st it hesitates to get going. Never displays any codes. Also some times at stop lights you can feel a slight surge like if you were driving manual and letting the clutch out slightly.
Your clutch might be going out. Automatic transmissions have a clutch as well
@@shreqboi1 it was actually the clutch actuator... but thank you.
@@guardiantransportation6656 🫡🫡
Thanks
I changed the tcm and it started to show me fault code 61 I then changed the harness and measured all the resistances but fault 61 is still active.
61 one is the rail position sensor which is attached to the ry shifter
*xy
What about the transmission does not engage a gear and do not show any fault codes? Any idea of what could it be?? Help please
Jae Pee what does your display do/say when you put it into D ?
mrjgueret it displays "1st gear from neutral, it up shifts and down shifts good. the problem is when it does not engage any gear it happens just all of sudden and the dash shows the gears just bouncing it does it on any gear. But it doesn't show any codes.
jgueret mines is not showing nothing on display almost like transmission doesn’t exist
Change the harness, with all sensors to be sure. sounds like the sensor closer to the input shaft is out. If that sensor is out transmission does not sense any input speed from the engine. The other speed sensors have different roles.
air leek
clutch
split pin
or could be the solenoid
Hello everyone
if any one had same issue om kenworth t680 2017 paccar mx 13 Eaton transmission fault code comes on dash board sats Transmission fault ,repair required find repair service . also on gear service light blinks ..
after shutting off and waiting few min and starting normal.
any suggestions or some one have some issue and fix it ?
thank you
What make and model is this and what makes and models have this access to the actuator?
2007 Freightliner Columbia. I would imagine all manufactures are still doing this instead of having a "manual floor" with hole for stick vs "auto floor" with no hole.
Hi. I have an 07 Freightliner Century with an Eaton fuller smart shift that won't go into neutral it keeps flash 1 F so am un able to start it. Any thoughts on what may be wrong?
Mark Mwema did you fix the issue
Edward Osafo did you unplug the sensors
Guys I put in a manual transmission put in an Eaton fuller manual 10 speed now it runs without any problems. The aftermarket transmission plus other parts and labor it cam to 6K. Thanks for all your concerns and input.
Mark Mwema did your truck have a clutch
@@Kingelbey
Yes it had a clutch. But no pedal.
can u make a video on how to calibrate xys with serviceranger4?
Shumbalove are you having problems with the auto calibration after transmission reset.?
What is the labor (idea) to changed harness and those sensor ?
Is there a sensor for low and high gear my seems to start having problems to go from high to low low and vice-versa?
Well there is a high low air operated actuator on the back of the transmission above and to the right of the output shaft that controls your high low range ork. Two things can go wrong with that the first of which is that it needs to be rebuilt with new O-rings/seals. For over-the-road drivers I would say if you haven't rebuilt it in 500,000 miles, it needs to be done. Secondly there is an electronic solenoid valve that supplies air to make that actuator go back and forth. Never seen one fail but it could be possible. I replaced mine at 1.3 million just in case. I would start there because you have normal shifting every other gear
@jgueret OK thanks for all the info I will take at look at that actuator. Thanks
Please help ! Issue i have is when you are stoping little bit stronger, sometimes just stop normally, transmission dont know what to do, and he wil not put in gear, D is blinking and making beeping noice.. then you have to reset transmission by turning truck down and start again. Sometimes even that does not help, i have to disconect batteries on the middle of road and wait few min.. he shift great while driving, but when you are stoping he get confused.
Tecu
Hello I have exactly the same problem with you and I am trying to find a way to figure out the problem but so far nothing even though I have so much money to fix this issue.Can anyone help me if you figure out for your own truck?
Kristi Lika
I am having the same issue but I was told that my clutch is bad. I’ve also been told that it’s a power issue, bad ground or broken ground wire as well as the xy shifter could be bad. Change the wiring harness from the ecm or data link cable to the transmission! Has anyone tryed these suggestions and got good results?
dparkersr I have the same problem and it was my clutch but now I can’t start my tractor with the key. The computer is storing a low voltage code, I delete the code but I comes back when you turn the tractor off. I’m going to try changing the wiring harness and maybe some sensors today to see if that fix the issue. I’ll update after I’m done.
Srdjane jel si uspjeo popraviti taj problem ? Ja imam isto taj problem i nemam pojma sta da radim. Jel moze da bude xy shifter ?
clutch will last forever
Good information I have eaton ultra-shift 10 speed 3rd gen automation. I am having problem. hard shifting from 6th to 9th gear up shifting. inactive code 21 , 73 ,74 please help
Did u fix it
You fixed it
I got a autoshift that keeps loosing communication what are the possible outcomes
Miles, email me @ roadtrekservices@yahoo.com. got to do this over the phone.
Need help my truck freightliner cascadia auto trans smart shift, shifts very hard from time to time, also it feel like transmission brakes while slowing to a red light and while stopped at red light it feels like drive shaft keeps moving and jerks the the truck, after I tried pulling off truck feels stuck in gear and it will eventually take off but jumps really hard. Need help finding problem please thank you in advance.
bud did you fix your problem. I am having same problem
Did you fix the problem ?
Its junk! Got one in my garage truck. It keeps getting stuck in gear 8th, 9th, 10th and reverse! My shop cant figure out how to fix it, I have to reset the dead man switch several times just to get it to release gears. JUNK!
Thats a manual trans with an XY shifter assembly... that hole is where your stick would go. lol
It’s actually an automatic transmission. The cabs are made the same for both manual and auto trucks.
It’s easier just taking off the drive shafts 😂😂😂
Does this transmission have replaceable filters anyone?
DemBallBoys no
Some Ultrashifts do. Have to drop the oil pan, mine has two in it. I have a 13 speed ultrashift MHP.
Más videos
Hi i hoy fui transmisión stock 5 guear
Pneumatic piston on rear of transmission not shifting from low to high
Hi. I recently purchased a Peterbilt 579 with an Eaton fuller advantage 10 spd auto.
It runs great. The tractor has 520K on it
Do you think I should proactively change those sensors?
I'm just trying to stay ahead of problems.
Ty
I did find that when I had to change mine they were extremely difficult to get out because the first series of the sensors had flat sides which bound up with rust. My tail shaft sensor actually snapped off in the bore. I was able to break it up and pull the pieces out. The new sensors whether or not you have them I don't know, have recessed sides which I believe is an attempt to keep them from locking in the bore. The original ones also weren't as lubed up as they could be which would protect the bores in which they sit. They are only like $45 a piece and even if you were to pull your old ones out and re grease them and throw them back in might be a good idea. My big recommendation for these is treat your wiring harness with respect. Download the PDF for the transmission and it will show you where all the wire ties need to go. Make sure none of the wires wiggle. loose wiring will cause early failure. Completely immobilize the entire harness. Many technicians never tie wrap anything back. I have my original harness at 1.3 million miles because I took care of it. Leave it loose and it won't last more than a couple hundred. My sensors went to about 900000 but it was a pain in the ass to get them out. My XY shifter usually lasts about five to six hundred thousand. The XY gear positions to start failing are 9 and 10 because that is where most of the shifting happens or those two areas get shifted between the most I should say. Your rail position sensors are the other ones that you may have to change before you even have to change the XY. If you bring it into a shop they probably will just replace the entire XY instead of the sensors. I can tell you that the diagnostic feature in these transmissions will tell you everything you need to know when you have a failure. It is awesome. Download the PDF and learn how to pull the codes and read them through the shift indicator. Unbelievable transmission good luck with it. You will not be disappointed once you learn it.
@@mrjgueret My truck has an Eaton auto shift, and during up shifts when it gets to 7th gear it takes a second attempt, and during down shifts from 10th to 9th it takes a second attempt. Also if I stop the truck real hard with a load or use the engine brake the transmission will get stuck in gear and won’t shift unless I turn it off and turn it back on like it was in limp mode. Can you help me diagnose it? Thanks
@@sstevocamaro I usually don't tell people it's their x y shifter immediately. But whenever I hear a 9-10 shift problem It's usually the xy shifter because 9 and 10 are the most frequently changed the gears. I'm not sure what's failing on the XY as I've never taken them apart but all I can figure is it may build flat spots on the armature of the motors between 9 and 10. Now I don't mean garbage truck or local delivery truck when I say 9- 10 are the most frequently shift shifted gears. Obviously if you're over the road you know which gears are shifted most. You're in 10 riding along and on a grade it always shifts to 9 and then back to 10 and so on. If you have no other transmission codes and it's acting wacky trying to shift it could definitely be the X Y if you haven't changed it out in 600,000 Mi you definitely need a new one.
@@mrjgueret Thank you 🙏🏽
I have a 2018 international LT and mine was acting up too mostly down shifting from 9 gear to 8. It wouldn't do it all the time but it was annoying. Finally took it international and they replaced the xy shifter and a harness. So far its running good you can feel the transmission going through the gear way better.
Your contact sir