2013 5 speed grand cherokee P0741

[drover]

Before you go and buy one, check the part number on the one thats fitted, one part number has been discontinued as far as I can tell the same TCM (TCU in some places) is fitted to the V6 petrol and V8 5 speeds, so if their number matches yours your on the money as yanks don't see the diesel as an engine till a year after yours then in a 8 speeder....

I think it might be 5150808AC though yours may have 5150729AE but its been discontinued......

I have never had to do this but this is from The WSM:

ADAPTATION - 3.6L GAS/3.0L DIESEL VEHICLES
The adaptation procedure requires the use of the appropriate scan tool. This program allows the electronic transmission system to re-calibrate itself. This will provide the proper baseline transmission operation. The adaptation procedure should be performed if any of the following procedures are performed:
Replacement is one of them, edit

1. With the scan tool, reset the Transmission adaptives. Resetting the adaptives will set the adaptives to factory settings.

NOTE: Perform the Coast Down Adaptations first. The Transmission Temperature
must be greater than 60°C (140°F) and less than 70°C (158°F). Failure to stay within these temperature ranges will void the procedure.

2. Drive the vehicle until the transmission temperature is in the specified range.

3. Perform 4 to 5 coast downs from 5th to 4th gear and then 4th to 3rd gear.
NOTE: For Upshift adaptation, the Transmission temperature must be greater
than 60°C (140°F) and less than 100°C (212°F). Failure to stay within these
temperature ranges will void this procedure.

4. From a stop, moderately accelerate the vehicle and obtain all forward gear ranges while keeping the Engine RPM below 1800 RPM. Repeat this procedure 4 to 5 times.

5. Obtaining 5th gear may be difficult at 1800 RPM. Allow the transmission to shift into 5th gear at a higher
RPM then lower the RPM to 1800 and perform manual shifts between 4th and 5th gears using the shift
lever.

6. The TCM will store the adaptives every 10 minutes. After completion of the adaptation procedure make sure the vehicle stays running for at least 10 minutes.

7. It is possible to manually store the adaptives under the 10 minute time frame using the scan tool Store.

[Treebreakerbob]

The Snap-on scan tool can do the adaptive setup and most auto guys have them, also I think my appcar has that ability as well. It Is just painful trying to follow and do the procedure on the road as traffic is always around because it takes so long

The TCM seems to be responsible for gear changes and the TCCM or DTCM stuffs around with the transfer box

[drover]

Originally Posted by Treebreakerbob

The Snap-on scan tool can do the adaptive setup and most auto guys have them, also I think my appcar has that ability as well. It Is just painful trying to follow and do the procedure on the road as traffic is always around because it takes so long

The TCM seems to be responsible for gear changes and the TCCM or DTCM stuffs around with the transfer box

I haven't checked to see if Alpha OBD does it but I imagine it can.. be like when my mate and I were doing stuff on his Fiat Van, he drove and I sat with the laptop playing with set ups......

[Treebreakerbob]

I’ll just bump this up to see if Simmo has any answers yet
Bob

[Simmo1987]

So removing the custom diesel tune seems to have either fixed or masked the problem?