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Registered: 09-2017
Location: Southeast Alabama.
Posts: 117
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Key Re-learn procedures & other important information when replacing the PCM.


With so many Commander owners having to replace their PCM's, (Powertrain Control Modules) due to age & wear, I thought this information was
important enough to post here for easy reference;

1) First & foremost, replacement ECU's / PCM's must be specifically programmed to your Commanders VIN, or, they will not function properly.

2) An existing/working master key FOB is required.

3) The Transmission Control Module is integrated into the PCM, on Commanders with the 4.7L & 5.7L V-8 engines.

4) The PCM is attached to the right front, inner fender located in the engine compartment. See the diagram below which is for a 3.7L V-6 engine;
I've verified it's in the same location on my 4.7L V-8 and I assume it's in the same location on the 5.7L V-8;

Image

5) There are specific Key Re-learn procedures when you replace the PCM; You can find them here;

Image

Other important PCM installation information;

Image

Also, here are few places you can order remanufactured ECU's / PCM's from;

https://store.allcomputerresources.com/20jecopcmecm7.html

http://www.autocomputerperformance.com/

https://www.fs1inc.com/jeep-ecu-ecm-pcm.html?enginesize=466&make=100&model=266&year=139

Keep in mind, some of these places may ask for a core charge until you return your old ECU/PCM to them;

allcomputerresources.com (The first link I posted) did not ask for a core charge, when I ordered my spare PCM, back on 12/14/2021.

I hope our community finds this information useful.

Last edited by Big Blue XK, 10/11/2023, 6:02 pm


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http://bthefloridacommandersclub.runboard.com

2008 Commander Sport; 4.7L Flex-Fuel V-8; QT-II 4WD; 105,XXX Miles
1/6/2022, 7:46 pm Link to this post Send Email to Big Blue XK   Send PM to Big Blue XK Blog
 
Big Blue XK Profile
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Head Administrator

Registered: 09-2017
Location: Southeast Alabama.
Posts: 117
Karma: 0 (+0/-0)
Reply | Quote
Re: Key Re-learn procedures & other important information when replacing the PCM.


Here are some pics of what you get when you order a remanufactured PCM;

Front

Image

Back

Image

Image

Image

Last edited by Big Blue XK, 1/6/2022, 8:07 pm


---


http://bthefloridacommandersclub.runboard.com

2008 Commander Sport; 4.7L Flex-Fuel V-8; QT-II 4WD; 105,XXX Miles
1/6/2022, 8:05 pm Link to this post Send Email to Big Blue XK   Send PM to Big Blue XK Blog
 


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