Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and more! - Page 10 - Jeep Garage - Jeep Forum

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  #109  
Old 10-15-2015, 03:40 PM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

Just had my transmission replaced. Had it rebuilt in August, and it was a shutter shift shortly after that had me bring it in. The transmission fluid was starting to burn. Jeep figured rather than rebuild it a 3rd time, they'd put a "new" one in.

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  #110  
Old 06-20-2016, 05:30 PM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

Hey guys, I have posted about this in the 15=16 HA thread, but I suppose this would be the more appropriate place to. I have a 2015 High Altitude V6 with a Dec 2015 build date. It has 4300 miles and literally just out of the blue one day it started doing a hard 2-3 shift. Not only does it shift 2-3 hard, but it seems to shift early as well. It ONLY does this while the transmission is cool. Above 130 degree tranny temps it shifts perfectly and normally.
Anyone experience this exact thing? If so are there any TSBs that pertain to this and if so did anything a dealer do fix the problem? At first it didn't seem terrible, but today I went to lunch with a coworker and it was enough for him to actually say "whoa" when it did the first 2-3 shift lol. Its not neck shattering, but sort of catches you off guard. Almost like if you had a 80s-90s Mustang or F-body with a shift kit kind of shift haha.

Thanks for any info!
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  #111  
Old 06-20-2016, 05:39 PM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

I had the hard 2-3 shift last fall. They replaced the valve body. Took care of the 2-3 problem, but, then I had a very harsh 2-1 issue. They relearned the tranny and it was fine, until several weeks ago. I'm now once again getting the harsh 2-3 problem when the tranny is cold. Like you, once it's warm, it's smooth. Mind you, I only have about 10,000 miles on the vehicle.

I guess, I'll have to mention it to the dealer once again. I'm really not happy with this shitty tranny. Sure, it's under warranty and will be for several more years. However, who needs the aggravation. Also, if I keep the car past the warranty date, what happens?
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  #112  
Old 06-20-2016, 06:02 PM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

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Originally Posted by jeepgrady View Post
the hard 2-3 shift last fall. They replaced the valve body. Took care of the 2-3 problem, but, then I had a very harsh 2-1 issue. The relearned the tranny and it was fine. Until several weeks ago. I now once again am getting the harsh 2-3 problem when the tranny is cold. Like you, once it's warm, it's smooth.

I guess, I'll have to mention it to the dealer once again. I'm really not happy with this shitty tranny. Sure, it's under warranty and will be for several more years. However, who needs the aggravation. Also, if I keep the car past the warranty date, what happens?
Humm, that doesn't sound very promising for me.
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  #113  
Old 06-20-2016, 06:41 PM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

Quote:
Originally Posted by JTS97Z28 View Post
Hey guys, I have posted about this in the 15=16 HA thread, but I suppose this would be the more appropriate place to. I have a 2015 High Altitude V6 with a Dec 2015 build date. It has 4300 miles and literally just out of the blue one day it started doing a hard 2-3 shift. Not only does it shift 2-3 hard, but it seems to shift early as well. It ONLY does this while the transmission is cool. Above 130 degree tranny temps it shifts perfectly and normally.
Anyone experience this exact thing? If so are there any TSBs that pertain to this and if so did anything a dealer do fix the problem? At first it didn't seem terrible, but today I went to lunch with a coworker and it was enough for him to actually say "whoa" when it did the first 2-3 shift lol. Its not neck shattering, but sort of catches you off guard. Almost like if you had a 80s-90s Mustang or F-body with a shift kit kind of shift haha.

Thanks for any info!

Totally Identical symptoms like you. I have a 2015 Overland. It started @ 2500 miles. I currently have 9800 miles. Took it in back in Dec, but they didn't do anything with it. Took it back in 2 weeks ago and they did the quick relearn. So far nothing has worked...unfortunately.


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---------- Post added at 06:41 PM ---------- Previous post was at 06:25 PM ----------

Just saw you did the battery disconnect overnight and it didn't work...that was my next plan of attack this weekend. Bummer it didn't help.


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  #114  
Old 06-20-2016, 10:26 PM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

So from what I'm gathering above, this issue is unrelated to any software update that's available and is actually an internal malfunctioning of some sort? The guy above said they changed the valve body which took care of the harsh 2-3 shift (for a little while anyway), but now he has a 2-1 problem and 2-3 problem again. Surely they tried software fixes first you would think.
I love my Jeep, but now I have two outstanding recalls, possibly a third for airbag supposedly, and now a tranny that likes to snap necks on the 2-3 shift. I couldn't pay a dealership to take it on trade lol.
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  #115  
Old 06-20-2016, 10:30 PM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

Correct. There is no TSB.
The post above also says that after the valve body, it came back recently. Which makes sense because you and I experienced it after several thousand miles.

Shifts great after the tranny warms up. But it's so annoying especially in the winter.


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  #116  
Old 06-21-2016, 07:29 AM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

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Originally Posted by 1st jeep View Post
Shifts great after the tranny warms up. But it's so annoying especially in the winter.


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Darn, I was just thinking about how it would be in the winter. My commute is about 23 minutes and 13 miles each way. It takes my tranny atleast a few miles to get to 130 degrees even when it's 90 degrees outside. I can only imagine I might be atleast half way home from work before it reaches 130 and stops snapping the 2-3 shift. I live near Chicago so when my car sits outside at work for 8 hours when it's 10 degrees outside this might not be a very fun driving experience.
So are the shifts even more rough the colder it is outside? Or is it the same, but just happens longer because it takes the tranny longer to warm up?
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  #117  
Old 06-21-2016, 10:43 AM
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That shift problem that shows up on the GC 845RE after people have driven them a few thousand miles has been going on since the 2014s started rolling off the line 3.5 years ago. Ashame 3.5 years later they still have not got it worked out completely. The MY16 8spds 845REs get a trans preheater if i remember right to help. If software or valvebody doesnt do it push for a new trans, no one should have to put up with that. The new trans was the fix for some on here in past couple years when all else failed.

From what i remember the preheater on the my16 is just a gate that bypasses the trans cooler. If its mechanical in operation like a water cooling thermostat maybe a thought as a retro fit on a MY14 or 15 to help. If its electrically controlled that would be a negative to get commands to it from tcm.

Push the dealer hard dont put up with shift issues on a new vehicle like this especially fof the length of years this issue has been dragging on.
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  #118  
Old 06-21-2016, 11:12 AM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

Had the same thing in MY14 ..TSB's did not helped but valve body did the job. So far so good.
Push for valve body to be changed.
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  #119  
Old 06-21-2016, 02:50 PM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

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Originally Posted by Czarniutki View Post
Had the same thing in MY14 ..TSB's did not helped but valve body did the job. So far so good.
Push for valve body to be changed.
Just curious, how many miles have you driven since the valve body replacement? Reason I ask is because others have reported they had the valve body replaced, only for the issue to come back just like it did after putting a few thousand miles on it after buying new.


One other question, since this is an issue that only affects the transmission when its cold, how does the dealer get to experience this? Do you have to leave it overnight? The thought of leaving my Jeep overnight at a dealer doesn't really thrill me, but there would really be no other way for them to experience this even though I can tell them exactly what it does, when it does it, and the conditions required.
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  #120  
Old 06-21-2016, 03:18 PM
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Re: Attention WK2 3.6L owners - New TSB for Shudder, harsh shifts, performance and mo

It started around 7000km and I had valve body changed around 10.000km, now I'm on 28.000km and its still fine.

I did left the car overnight and came in the morning and asked them to drive it. Once they noticed they done TSB + relearn - no luck, next time they just performed next TSB + relearn this didn't work either.. then valve body was ordered.
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