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-   -   2014 jeep grand cherokee transmission (http://www.jeepgarage.org/f73/2014-jeep-grand-cherokee-transmission-69460.html)

talexanderson 12-21-2013 12:28 PM

2014 jeep grand cherokee transmission
 
I have a new 2014 JGC with a 5.7 Hemi. I've noticed that there seems to be excessive downshifting especially when driving vehicle under 40mph. It almost seems as though the transmission is searching for a lower gear. Has anyone else had similar issues?

PB4UGO 12-21-2013 12:50 PM

Re: 2014 jeep grand cherokee transmission
 
Haven't had that problem with mine. I did have to re-learn throttle input with the 8-spd though.

talexanderson 12-21-2013 01:00 PM

Re: 2014 jeep grand cherokee transmission
 
What do you mean by "re-learn" the throttle input?

PB4UGO 12-21-2013 01:17 PM

Re: 2014 jeep grand cherokee transmission
 
Quote:

Originally Posted by talexanderson (Post 948715)
What do you mean by "re-learn" the throttle input?

Input to the throttle is quickly translated by the ECU's. Small inputs, at times, resulted in a larger outcome than I expected. "Smooth is fast and fast is smooth" as some folks like to say and applies to the throttle here!

Also, are you driving in the default ECO mode?? ECO mode will force the transmission to hold higher gears longer. If you are in sport mode, than it will stick to 6th, rarely making 7th gear.

Overall, I have yet to experience the transmission "hunting" for a gear. Simply, this is the best automatic I've ever driven!!

Roki303 12-21-2013 02:13 PM

Re: 2014 jeep grand cherokee transmission
 
Quote:

Originally Posted by talexanderson (Post 948704)
I have a new 2014 JGC with a 5.7 Hemi. I've noticed that there seems to be excessive downshifting especially when driving vehicle under 40mph. It almost seems as though the transmission is searching for a lower gear. Has anyone else had similar issues?

There has been several flashes for tranny software to resolve the issue. There is a TSB out there. Look at WK2Jeeps.com - 2011-2016 Jeep Grand Cherokee

tomk 12-21-2013 04:16 PM

Re: 2014 jeep grand cherokee transmission
 
I've only experienced that in sport mode, where "that's a feature and not a bug" ...

...tom

2014RedHemiGC 12-22-2013 10:08 AM

Re: 2014 jeep grand cherokee transmission
 
Also, with 8 speeds and eco mode, the transmission will try to stay in the highest gear for fuel economy, but those speeds are right on the threshold of those taller ratios. Throttle input at those speeds can cause the transmission to vary which gear it is in. The update is for V6 only right?

TurboRush 12-23-2013 11:02 AM

Re: 2014 jeep grand cherokee transmission
 
Quote:

Originally Posted by Roki303 (Post 948764)
There has been several flashes for tranny software to resolve the issue. There is a TSB out there. Look at WK2Jeeps.com - 2011-2016 Jeep Grand Cherokee

These only apply to the v6, not the Hemi.

Eddie8620 12-31-2013 12:48 AM

Re: 2014 jeep grand cherokee transmission
 
I'm experiencing the same issue with my 14 V6 overland when downshifting. Has the dealer acknowledge this problem for any one?

TurboRush 12-31-2013 08:33 AM

Re: 2014 jeep grand cherokee transmission
 
Quote:

Originally Posted by Eddie8620 (Post 952493)
I'm experiencing the same issue with my 14 V6 overland when downshifting. Has the dealer acknowledge this problem for any one?

Yes, there is a TSB as mentioned about for the transmission in the V6s - WK2Jeeps.com - 2011-2016 Jeep Grand Cherokee, although the OP has a V8.

Might be worth giving the battery a 20 minute disconnect and a few hundred miles to learn your driving style. Just a thought.

hardy616 12-31-2013 02:21 PM

Re: 2014 jeep grand cherokee transmission
 
U guys are referring to this ? http://www.wk2jeeps.com/tsb/tsb_wk2_2100713c.pdf

My dealer flashed the tranny back in Oct. as I can recall. Not sure if I should ask them to flash again. After the learning period, the tranny now shifts smoothly. Maybe flashing the transfer case is worth another visit to the dealership?


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