Flash: 8HP70 Transmission Shift Enhancements - 2015 Jeep Grand Cherokee

NUMBER: 21-045-15
GROUP: Transmission and Transfer Case
DATE:  July 03, 2015

 

THIS BULLETIN SUPERSEDES SERVICE BULLETIN 21-040-14, DATED NOVEMBER 26, 2014, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE ADDITIONAL SYMPTOM CONDITIONS AND NEW LABOR OPS.

HELP USING THE wiTECH DIAGNOSTIC APPLICATION FOR FLASHING AN ECU IS AVAILABLE BY SELECTING “HELP” THEN “HELP CONTENTS” AT THE TOP OF THE wiTECH DIAGNOSTIC APPLICATION WINDOW.

THE wiTECH SOFTWARE LEVEL MUST BE AT **15.04** OR HIGHER TO PERFORM THIS PROCEDURE.

 

SUBJECT:

Flash: 8HP70 Transmission Shift Enhancements

 

OVERVIEW:

This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software.

 

MODELS:

2015 (WK) Jeep Grand Cherokee

NOTE: This bulletin applies to vehicles built on or before June 18, 2015 (MDH 0618XX) equipped with a 3.0L diesel engine (sales code EXF) and 8HP70 automatic transmission (sales code DFD or DFK), .

 

SYMPTOM/CONDITION:

A small number of customers may experience one of more of the following conditions.

  • **Bump sensation during low speed tip-in acceleration.**
  • **Downshift engine flare during coast down deceleration at higher altitudes.**
  • **Bump sensation during 6-5 downshift.**
  • **Bump sensation during 1-2 upshift.**
  • Intermittent delayed upshifts in 1st or 2nd gear.
  • Less than desired shift quality when operating the vehicle in Four Wheel Drive (4WD) Low mode.
  • With the vehicle stationary and the Selec-Terrain system set to Snow Mode, the transmission will perform a 2-1 downshift when pressing the (+) steering wheel mounted shift paddle instead of remaining in 2nd gear.

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Transmission Heater Assembly Reinforcement Plate - 2015 RAM 1500 Pickup

NUMBER: 21-037-15 REV. A
GROUP: Transmission and Transfer Case
DATE: July 24, 2015

 

THIS BULLETIN SUPERSEDES SERVICE BULLETIN 21-037-15, DATED MAY 30, 2015, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE A REVISED CLEAN DATE.

THIS SERVICE BULLETIN IS ALSO BEING RELEASED AS RAPID RESPONSE TRANSMITTAL (RRT) 15-062. ALL APPLICABLE SOLD AND UN-SOLD RRT VIN's HAVE BEEN LOADED. TO VERIFY THAT THIS RRT SERVICE ACTION IS APPLICABLE TO THE VEHICLE, USE VIP OR PERFORM A VIN SEARCH IN TECHCONNECT. ALL REPAIRS ARE REIMBURSABLE WITHIN THE PROVISIONS OF WARRANTY.

 

SUBJECT:

Transmission Heater Assembly Reinforcement Plate

 

OVERVIEW:

This bulletin involves verifying the Transmission Heater Assembly build date and if necessary, replacing the Transmission Heater.

 

MODELS:

2015 (DS) RAM 1500 Pickup
2015 (DX) RAM 1500 Pickup (MEXICO)

 

NOTE: **This bulletin applies to vehicles built on or after December 1, 2014 (MDH 1201XX) and on or before December 15, 2014 (MDH 1215XX) equipped with one of the following options.**

 

SYMPTOM/CONDITION:

A small number of customers may notice the presence of transmission fluid in the engine coolant.

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Flash: Transmission Shift Enhancements - 2015 Dodge Durango & Jeep Grand Cherokee

NUMBER: 21-030-16
GROUP: Transmission and Transfer Case
DATE: September 10, 2016

 

THIS BULLETIN SUPERSEDES SERVICE BULLETINS 21-039-14, DATED NOVEMBER 25, 2014, 21-027-15 REV. C, DATED OCTOBER 09, 2015 AND 21-064-15, DATED NOVEMBER 21, 2015, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE ADDITION OF 2015 MY WD VEHICLES, SOFTWARE ENHANCEMENTS FOR VEHICLES EQUIPPED WITH 5.7L ENGINE AND LOP.

FOR HELP WITH USING wiTECH FOR ECU FLASH REPROGRAMMING, CLICK ON THE APPLICATION’S “HELP” TAB.

THE wiTECH SOFTWARE IS REQUIRED TO BE AT THE LATEST RELEASE BEFORE PERFORMING THIS PROCEDURE.

 

SUBJECT:

Flash: Transmission Shift Enhancements

 

OVERVIEW:

This bulletin involves reprogramming of the Transmission Control Module (TCM) with the latest available software.

 

MODELS:

**2015 (WD) Dodge Durango**
2015 (WK) Jeep Grand Cherokee

NOTE: This bulletin applies to vehicles equipped with the following options:

  • Vehicles equipped with a 5.7L gas engine (Sales Code EZH) and equipped with the 8HP70 8 speed transmission (Sales Code DFD) or (Sales Code DFK).
  • Vehicles equipped with a 3.0L gas engine (Sales Code EHD) and equipped with the 845RE 8 speed transmission (Sales Code DFL) built on or after July 23, 2014 (MDH 0723XX) and built on or before October 17, 2014 (MDH 1017XX).
  • Vehicles equipped with a 3.6L gas engine (Sales Code ERB) and equipped with the 845RE 8 speed transmission (Sales Code DFL) built on or after July 21, 2014 (MDH 0721XX) and built on or before October 17, 2014 (MDH 1017XX).

 

SYMPTOM/CONDITION:

The following TCM calibration improvements are available for vehicles equipped with the 845RE 8 speed transmission (Sales Code DFL) or 8HP70 8 speed transmission (Sales Code DFD or DFK). These improvements are listed per engine application.

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Flash: 8HP70 SRT Transmission Shift Enhancements - 2015 Jeep Grand Cherokee

NUMBER: 21-018-15
GROUP: Transmission and Transfer Case
DATE: March 25, 2015

 

THIS BULLETIN SUPERSEDES SERVICE BULLETIN 21-038-14, DATED NOVEMBER 25, 2014, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE ADDITIONAL SOFTWARE ENHANCEMENTS AND NEW LABOR OPS.

HELP USING THE wiTECH DIAGNOSTIC APPLICATION FOR FLASHING AN ECU IS AVAILABLE BY SELECTING “HELP” THEN “HELP CONTENTS” AT THE TOP OF THE wiTECH DIAGNOSTIC APPLICATION WINDOW.

THE wiTECH SOFTWARE LEVEL MUST BE AT **15.03** OR HIGHER TO PERFORM THIS PROCEDURE.

 

SUBJECT:

Flash: 8HP70 SRT Transmission Shift Enhancements

 

OVERVIEW:

This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software.

 

MODELS:

2015 (WK) Jeep Grand Cherokee

NOTE: This bulletin applies to vehicles built on or before March 3, 2015 (MDH 0303XX) equipped with a 6.4L engine (Sales Code ESG) and an 8HP70 automatic transmission (Sales Codes DFK or DFD).

 

SYMPTOM/CONDITION:

A small number of customers may experience one or more of the following conditions.

  • **Less than desired gear shifts when driving on steep grades in lower altitudes.
  • Less than desired gear shifts during aggressive, high speed driving.
  • Erratic 1-2 upshift in cold ambient temperatures.
  • Delayed engagement shifting from reverse to drive.**
  • Harsh or inconsistent upshift that happens intermittently.
  • Harsh or inconsistent downshift that happens intermittently while coasting or during passing maneuvers.
  • Intermittent delayed shift from 6th gear during aggressive high speed driving.

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Flash: 8HP70 Transmission Shift Quality And Drivability Enhancements - 2015 Ram 1500 Pickup

NUMBER: 21-014-15
GROUP: Transmission and Transfer Case
DATE: March 04, 2015

 

HELP USING THE wiTECH DIAGNOSTIC APPLICATION FOR FLASHING AN ECU IS AVAILABLE BY SELECTING “HELP” THEN “HELP CONTENTS” AT THE TOP OF THE wiTECH DIAGNOSTIC APPLICATION WINDOW.

THE wiTECH SOFTWARE LEVEL MUST BE AT 15.02 OR HIGHER TO PERFORM THIS PROCEDURE.

 

SUBJECT:

Flash: 8HP70 Transmission Shift Quality And Drivability Enhancements

 

OVERVIEW:

This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software

 

MODELS:

2015 (DS) Ram 1500 Pickup

NOTE: This bulletin applies to vehicles built on or before March 3, 2015 (MDH 0303XX) equipped with a 3.0L diesel engine (sales code EXF) and an 8HP70 automatic transmission (sales code DFD).

 

SYMPTOM/CONDITION:

A small number of customers may experience one or more of the following conditions.

  • Bump sensation during tip-in acceleration between 5-10 mph (8-16 kph).
  • Less than desired transmission performance during Torque Converter Clutch (TCC) lockup.
  • Less than desired transmission performance in Tow/Haul mode.
  • Less than desired transmission performance during coast down deceleration at higher altitudes.
  • Bump sensation during 6-5 downshift.
  • Bump sensation during 1-2 upshift.

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