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  #1  
Old 08-27-2014, 04:26 AM
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2014 CRD + 8-speed: MAJOR shift enhancements/improvements 08/27/14

TSB NUMBER: 21-026-14
GROUP: Transmission and Transfer Case
DATE: August 27, 2014
SUBJECT: Flash: Transmission Shift Enhancements
OVERVIEW: This bulletin involves flash reprogramming of the Transmission Control Module (TCM) with new software.
MODELS: 2014 (WK) Grand Cherokee

NOTE: This bulletin applies to vehicles built on or before July 01, 2014, equipped with the 3.0L engine (Sales Code EXF) and the 8HP70 Automatic Transmission (Sales Codes DFD).

SYMPTOM/CONDITION:
(note: ** changes from prior TSB flash **)

** 3-2, 2-1 Shift bump on deceleration. **
** Shift quality during hard acceleration. **
** Excessive shifts during cruise control operation. **
** Intermittent delay shift condition. **
** Engine braking improvements during downhill descent. **
** Manual gear selection improvements at higher altitudes. **
** Drivability improvements in 4 low. **
** Hesitation improvements. **
Inconsistent and/or harsh 1-2, 2-3, 3-4, 4-5 upshifts at moderate throttle.
Inconsistent and/or harsh lift-foot upshifts.
Inconsistent and/or harsh coasting 3-2, 2-1 downshifts in Hi or Lo range.
Ratio fault detection during 1-2 upshift or 8-7 downshift.
Grade hunting (repeated shifting while ascending a grade).
8-7-8 shift busyness when approaching max vehicle speed.
Undesired gear selection at high altitude.
Undesired gear selection when driving downhill (not enough powertrain braking).
Time to exit TIP (manual/paddle shift mode) takes too long.
Unintended downshifts driving at certain speeds.
4-3 coasting downshift may cause excessive engine noise during engine braking.
Shift hanging when vehicle is started cold.
Undesired shift toggling in Manual/Paddle Shift mode.
Lo range selec-speed control 1-2 shift busyness.

Download PDF at: Jeep Grand Cherokee WK2 - 2011-2016 Grand Cherokee Service Bulletins and Recalls

--Milous
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  #2  
Old 08-27-2014, 05:19 AM
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Re: 2014 CRD + 8-speed: MAJOR shift enhancements/improvements 08/27/14

Thanks Milos going to go to the service manager tomorrow ,cheers mate


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Old 08-27-2014, 05:19 AM
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Re: 2014 CRD + 8-speed: MAJOR shift enhancements/improvements 08/27/14

Can't find the PDF in the download link. Not released yet?
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Old 08-27-2014, 06:01 AM
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Re: 2014 CRD + 8-speed: MAJOR shift enhancements/improvements 08/27/14

It's the very top one under New.
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Old 08-27-2014, 06:09 AM
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Re: 2014 CRD + 8-speed: MAJOR shift enhancements/improvements 08/27/14

Would this apply to 14" with the hemi 8 speed. ? Would like to know going to the dealer next week
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Old 08-27-2014, 06:23 AM
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Re: 2014 CRD + 8-speed: MAJOR shift enhancements/improvements 08/27/14

Quote:
Originally Posted by SNUKE View Post
It's the very top one under New.

Strange. The latest on my screen is dated 08/23/14

08-071-14- - - -08/23/14FLASH: PARK ASSIST ENHANCEMENT
(supersedes 08-039-13 dated 05/21/13) X
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Old 08-27-2014, 06:32 AM
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Re: 2014 CRD + 8-speed: MAJOR shift enhancements/improvements 08/27/14

Quote:
Originally Posted by maxy9 View Post
Thanks Milos going to go to the service manager tomorrow ,cheers mate


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Re-read it Max, its for the 3.0lt V6, not our SRT's (although there was one for that months ago?)
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Old 08-27-2014, 09:55 AM
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Re: 2014 CRD + 8-speed: MAJOR shift enhancements/improvements 08/27/14

Quote:
Originally Posted by DCRSRT View Post
Re-read it Max, its for the 3.0lt V6, not our SRT's (although there was one for that months ago?)

Thx mate I did jump that bit , cheers ...


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Old 08-27-2014, 09:58 AM
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Re: 2014 CRD + 8-speed: MAJOR shift enhancements/improvements 08/27/14

How's your tranny DCRSRT ? .. I had the last update and mine is still bad also have complained to the service manager . My last resort is to try the battery disconnect procedure or pull out the fuse and try that .


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Old 08-27-2014, 03:39 PM
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Re: 2014 CRD + 8-speed: MAJOR shift enhancements/improvements 08/27/14

Quote:
Originally Posted by mmcrh View Post
Strange. The latest on my screen is dated 08/23/14

08-071-14- - - -08/23/14FLASH: PARK ASSIST ENHANCEMENT
(supersedes 08-039-13 dated 05/21/13) X
Refresh the page...
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Old 08-27-2014, 08:20 PM
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Re: 2014 CRD + 8-speed: MAJOR shift enhancements/improvements 08/27/14

damnit, I was just at the dealership yesterday asking about this exact problem and they said it's 'normal'. back to the dealer I go. Thanks for the update!
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Old 08-28-2014, 02:27 AM
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Re: 2014 CRD + 8-speed: MAJOR shift enhancements/improvements 08/27/14

The big question is whether AUS dealers have the software and know-how to perform the update? My personal experience is they say "it's normal" for issues they simply don't know.

Mmc
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