[CvilleDiesel]

I have about 9,000 miles on my '14 GC Diesel Limited purchased in Feb.

For the last few months, off and on, I will have a small slippage of the tranny. This happens when I have just completed accelerating and lift of the gas to a level speed, the tranny can't decide whether it wishes to be in a high gear or low gear. It switches back and forth very very rapidly for as long as I hold the gas steady. The feeling is very similar to if I run over a rumble strip on the highway, just without the noise. If I let off the gas for a few seconds and then reapply, it is fine. Additionally, if I hit the paddle shifter to down shift by one gear, it selects the low gear immediately and has no problem. I can then use the other shifter to return to auto, and I am fine.

Odd part is, this is not happening at a set level of RPM. The tach is sometimes below 1500, sometimes between 1500 and 2000 and sometimes above 2000.

The frequency with which this is happening is increasing. The dealer says they have never experienced it. But I also know that dealers in Charlottesville VA haven't sold more than a handful of diesels, so I don't expect they've dealt with much of anything. I'd love to hear user reports or thoughts before I actually leave my GC with the dealer for a day.

My thought is that there is simply something wrong with the computer that is determining shift points. But whether the dealer can even replicate the problem is untold as it is roughly once a week that I feel it.

 

[AOR]

Ask your local dealer if they can do a transmission "relearn" procedure for you. If it's the same as their older products it only takes a few minutes

 

[granite]

CvilleDiesel,
I'm having the exact same problem you are experiencing. Trying to pinpoint when and how to duplicate this prior to bringing it in.Please keep us informed should you find the remedy.
Allan

 

[Brewster]

Check out newest TSBs- there is one addressing tranny shifting released on 8/27:

http://www.wk2jeeps.com/wk2_tsb.htm#NEW

 

[ExcursionDiesel]

You are experiencing "Fishbites". I believe it is the lockup torque converter's clutch and dampening springs oscillating or the valvebody. Either way, the shudder can be very intense if you don't reduce the throttle or accelerate hard enough to downshift. Chrysler won't admit it's an issue unless we press hard for a solution. The TSB won't fix severe shuddering but helps if it is mild. I filed a complaint with NHTSA because the shudder is disorienting and distracting to the driver...and I want to get Chrysler's attention to fix this issue.

Feel free to do the same here:

Key words to use: unsafe, shudder, drivetrain.

https://www-odi.nhtsa.dot.gov/VehicleComplaint/index.xhtml

 

[Jeff5280]

Check out newest TSBs- there is one addressing tranny shifting released on 8/27:

http://www.wk2jeeps.com/wk2_tsb.htm#NEW

Thanks for the tip on the TSB. I had the same issue as reported here after the did the first software upgrade. Really bad! Dealer told me to drive it. Did a 500 mile road trip and the bumping problem never came back. The transmission "learning" process i guess. Still has some issues that the TSB addresses. Again Thanks.

 

[Jeff5280]

Thanks for the tip on the TSB. I had the same issue as reported here after the did the first software upgrade. Really bad! Dealer told me to drive it. Did a 500 mile road trip and the bumping problem never came back. The transmission "learning" process i guess. Still has some issues that the TSB addresses. Again Thanks.

Wanted to add something here. "Brewsters" post referenced TSB 21-026-14. Had the dealer put this in today. So far (100 miles or so) it has made a significant difference. Smoother shifts and to my surprise more linear power. Not as much turbo lag, or so it feels. This is not just a software download. It takes 2 techs. One to drive the GC at a certain speed in a certain gear and one to monitor and adjust the electronics via a control box. Something about accessing / adjusting clutch pack settings. Process took the better part of a day. Hope this stays this way! Thanks Brewster!

 

[ExcursionDiesel]

Wanted to add something here. "Brewsters" post referenced TSB 21-026-14. Had the dealer put this in today. So far (100 miles or so) it has made a significant difference. Smoother shifts and to my surprise more linear power. Not as much turbo lag, or so it feels. This is not just a software download. It takes 2 techs. One to drive the GC at a certain speed in a certain gear and one to monitor and adjust the electronics via a control box. Something about accessing / adjusting clutch pack settings. Process took the better part of a day. Hope this stays this way! Thanks Brewster!

The TSB lowers the threshold for downshifting which prevents the vehicle from lugging. It also decreases efficency. Owners, especially in hill country, are reporting reduced mpg....but it does eliminate shuddering which has been a common complaint.

If you read the TSB, the learning procedure requires paddle shifts at certain torque demand and speed conditions. The WiTech terminal is used to monitor these values, not set them. The TCU sets everything on its own as the driver operates under monitored and controlled conditions.

Pulling fuse F60 or disconnecting the battery wipes for 15 minutes resets the the learning and anyone can follow the teaching process if they are inclined.

 

[John A Howard]

I have about 9,000 miles on my '14 GC Diesel Limited purchased in Feb.

For the last few months, off and on, I will have a small slippage of the tranny. This happens when I have just completed accelerating and lift of the gas to a level speed, the tranny can't decide whether it wishes to be in a high gear or low gear. It switches back and forth very very rapidly for as long as I hold the gas steady. The feeling is very similar to if I run over a rumble strip on the highway, just without the noise. If I let off the gas for a few seconds and then reapply, it is fine. Additionally, if I hit the paddle shifter to down shift by one gear, it selects the low gear immediately and has no problem. I can then use the other shifter to return to auto, and I am fine.

Odd part is, this is not happening at a set level of RPM. The tach is sometimes below 1500, sometimes between 1500 and 2000 and sometimes above 2000.

The frequency with which this is happening is increasing. The dealer says they have never experienced it. But I also know that dealers in Charlottesville VA haven't sold more than a handful of diesels, so I don't expect they've dealt with much of anything. I'd love to hear user reports or thoughts before I actually leave my GC with the dealer for a day.

My thought is that there is simply something wrong with the computer that is determining shift points. But whether the dealer can even replicate the problem is untold as it is roughly once a week that I feel it.

I have about 9,000 miles on my '14 GC Diesel Limited purchased in Feb.

For the last few months, off and on, I will have a small slippage of the tranny. This happens when I have just completed accelerating and lift of the gas to a level speed, the tranny can't decide whether it wishes to be in a high gear or low gear. It switches back and forth very very rapidly for as long as I hold the gas steady. The feeling is very similar to if I run over a rumble strip on the highway, just without the noise. If I let off the gas for a few seconds and then reapply, it is fine. Additionally, if I hit the paddle shifter to down shift by one gear, it selects the low gear immediately and has no problem. I can then use the other shifter to return to auto, and I am fine.

Odd part is, this is not happening at a set level of RPM. The tach is sometimes below 1500, sometimes between 1500 and 2000 and sometimes above 2000.

The frequency with which this is happening is increasing. The dealer says they have never experienced it. But I also know that dealers in Charlottesville VA haven't sold more than a handful of diesels, so I don't expect they've dealt with much of anything. I'd love to hear user reports or thoughts before I actually leave my GC with the dealer for a day.

My thought is that there is simply something wrong with the computer that is determining shift points. But whether the dealer can even replicate the problem is untold as it is roughly once a week that I feel it.

My jeep has a shudder/transmission problem - recently on Georgia 400 it was so bad I thought I might have to have it towed. It is episodic. I took it to the dealer for the 4th or 5th time with this problem. The dealer drives the car, reports it can't duplicate the problem and says they can't do anything - since there is no check engine light on. If anyone has had any discussions with Chrysler or dealers that have acknowledged this problem, please reply. John A Howard

 

[granite]

I had the the same tranny shudder with my 2014 limited. Did the research only to find a TSB for that exact problem. Printed it and went to the dealer. They knew about it before I showed him my printed material. They uploaded some new software along with a whole list of other stuff. Gone it was and never happened again.

 

[John A Howard]

I had the the same tranny shudder with my 2014 limited. Did the research only to find a TSB for that exact problem. Printed it and went to the dealer. They knew about it before I showed him my printed material. They uploaded some new software along with a whole list of other stuff. Gone it was and never happened again.

Unfortunately, My 2014 Diesel has consumed all the TSBs and the transmission gremlin appears on almost every outing. When I take it to the dealer, the result is always the same, "Condition not Found." The factory is aware to the problem and directs that I take it to the dealer, which, as stated, reports "Condition Not Found." - so nothing is done. I too, have learned to use the paddles. John A Howard Sr

 

[eaglescout1987]

A week ago I saw the following TSB: http://www.wk2jeeps.com/tsb/tsb_wk2_0900615.pdf

Pretty much describes my issue perfectly which sounds similar to yours. So I guess it's back to the dealership to have this done. Perhaps this could help you as well.

I have had this jeep 18 months and this is probably the 10th time to the dealer and second major repair job on it and I haven't even hit 20,000 miles. Really starting to consider walking away from it at this point. I wish it was more reliable but frankly, it isn't. I just got married last weekend and I need a reliable vehicle (as it's our only one together) for our future family. I just don't think I can trust this vehicle much longer.

 

[John A Howard]

A week ago I saw the following TSB: http://www.wk2jeeps.com/tsb/tsb_wk2_0900615.pdf

Pretty much describes my issue perfectly which sounds similar to yours. So I guess it's back to the dealership to have this done. Perhaps this could help you as well.

I have had this jeep 18 months and this is probably the 10th time to the dealer and second major repair job on it and I haven't even hit 20,000 miles. Really starting to consider walking away from it at this point. I wish it was more reliable but frankly, it isn't. I just got married last weekend and I need a reliable vehicle (as it's our only one together) for our future family. I just don't think I can trust this vehicle much longer.

I have a suggestion. Wednesday, I started from Atlanta to Birmingham to pick up a grandchild. For the first 30 miles or so, in heavy afternoon Atlanta traffic, she bucked almost continuously - really bad. I then put it in cruise control mode and she ran great 70-75. It is as if cruise control somehow "trains" the system. Since Wednesday, the gremlin is MIA. I suspect cruise control must have its own logic. John A Howard Sr

 

[Brewster]

Wondering if you 'just blew out that carbon'- I think if you drive in town in 'stop and go' its important to put the pedal to the metal once in a while to take of any soot or carbon build-up. ( I've been adding 5oz Opti-lube XPD on each 18-20 gallon fill up; which I think is GREAT for keeping things clean!)

 

[John A Howard]

Wondering if you 'just blew out that carbon'- I think if you drive in town in 'stop and go' its important to put the pedal to the metal once in a while to take of any soot or carbon build-up. ( I've been adding 5oz Opti-lube XPD on each 18-20 gallon fill up; which I think is GREAT for keeping things clean!)

I think/assume the problem is the Tanny or the computer (PCM or TCM). The reason: when the problem arises, I can usually control it with the paddles - maybe gear down a gear or two and go back to drive. And when I take it to dealer and service rep takes it home, it always comes back "condition not found." Very frustrating. But I don't know. I do know there is no fault code for the problem. It is now a game. JAH SR

 

[John A Howard]

I think/assume the problem is the Tanny or the computer (PCM or TCM). The reason: when the problem arises, I can usually control it with the paddles - maybe gear down a gear or two and go back to drive. And when I take it to dealer and service rep takes it home, it always comes back "condition not found." Very frustrating. But I don't know. I do know there is no fault code for the problem. It is now a game. JAH SR

Ok , enough of cruise control. I was on I-75 this afternoon and activated cruise control for 70 - and it started the fishbit/missing. On the way home, it had bad spell in heavy traffic, to the point it would not accelerate. I shifted down and back back to drive. It would behave on the downshift, but when I went back to drive, the gremlin would appear. While dealing the gremlin, at about 65mph, shifted into neutral to see/feel the engine - it was smooth. The problem is related to the transmission. JAH SR

 

[granite]

Ok , enough of cruise control. I was on I-75 this afternoon and activated cruise control for 70 - and it started the fishbit/missing. On the way home, it had bad spell in heavy traffic, to the point it would not accelerate. I shifted down and back back to drive. It would behave on the downshift, but when I went back to drive, the gremlin would appear. While dealing the gremlin, at about 65mph, shifted into neutral to see/feel the engine - it was smooth. The problem is related to the transmission. JAH SR

I had this very same symptom. Found a TSB online about the transmission shudder. Printed it and showed it to the service manager at the dealer. After they did the computer flash it never reappeared.

 

[eaglescout1987]

Well I took the Jeep in yesterday to my dealer. Apparently the parts are on back order for TSB 009-006-15 (what a shock). I called CCC and they are putting everything on expedite but I am still looking at 5-7 business days best case for them to arrive and then I bet it will be another 2-3 days to complete the repair. I don't have a lot of confidence that in the repair team over there either since it took 3 trips to get the Cat replaced and they put the wrong oil in the engine twice. I think I may need to throw in the towel, get the dealer to take this thing off my hands and move on. This is the 12th trip to the service department in 18 months. I am just so done with this....

 

[John A Howard]

I had this very same symptom. Found a TSB online about the transmission shudder. Printed it and showed it to the service manager at the dealer. After they did the computer flash it never reappeared.

Ok. Chrysler/Jeep

I had this very same symptom. Found a TSB online about the transmission shudder. Printed it and showed it to the service manager at the dealer. After they did the computer flash it never reappeared.

I had this very same symptom. Found a TSB online about the transmission shudder. Printed it and showed it to the service manager at the dealer. After they did the computer flash it never reappeared.

Chrysler/Jeep has apparently investigated the shudder problem and determined the source is the engine. Check out STB 09-006-15, issued 7/18/15. It calls for the replacement of the engine cylinder heads which incorporate newly designed value stem seals. I finally got a diesel mechanic to ride with me and the shudder was evident in the 60-70mph range. My Jeep is in surgery as I write. JAH Sr

 

[eaglescout1987]

Mine just started surgery yesterday. Should be out by tomorrow afternoon. Rumor on some other sites is that the replacement cylinder heads being put in have a slightly different design that supposedly prevents soot build up in the valves which supposedly is the problem. However, I also had the dealer put the wrong low ash motor oil in the first 2 oil changes, so perhaps I was destined to have this issue regardless. I also heard one of the recent software updates changed some of the mechanics to try and prevent soot build up. Perhaps that may help some people. I imagine working the engine hard and hot with towing and such may help keep the build up from happening too.

But if Chrysler is for once owning up to an issue that can't be solved via software updates, I figured I might as well get it replaced before they change their mind or issue a recall that creates a huge run on parts like the Cat issue did. Plus it's no money out of my pocket, so let them deal with it now while its still under factory warranty is my view.