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Transmission Control Module Location


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Glad you found it.  Most of the TCM's are mounted to the main basement compartment ceiling. They are covered by the gray felt board.  

There should be a dedicated wire from the battery to the transmission module.  I'd check the fuse in it.  

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7 hours ago, vito.a said:

Glad you found it.  Most of the TCM's are mounted to the main basement compartment ceiling. They are covered by the gray felt board.  

There should be a dedicated wire from the battery to the transmission module.  I'd check the fuse in it.  

Mine is right on the drivers side of the transmission. Why would they mount the TCM that far away.....lol

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Mine was in the left driver's console, with the keypad mounted directly to it.

11 hours ago, Brett63 said:

Mine is right on the drivers side of the transmission. Why would they mount the TCM that far away.....lol

It's close to the keypad, and protected from the elements in the console.
I'd be more inclined to wonder why they'd mount it underneath the coach.

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In 2013 I lost all power to the dash and transmission control pad.  I was frantic as I was getting ready to head overseas and my wife was scheduled to go to a dog show from TN to NY.  Did a bunch of trouble shooting and ultimately decided it was the control module.  In my case it is located in the drivers side outside electrical compartment. 

We live near Knoxville, where there is an Allision shop but they refused to send a mobile tech out and the coach had to be towed to the shop (~30 miles), luckily AAA covered the tow.   I met the tow truck as he was coming to get it but had to head to the airport so my wire "supervised" the driver to make sure he didn't damage anything. 

Ultimately they found the module bad, didn't have time to wait on sending mine off for repair so a new one was $3500 installed.  The had one in stock at another location and to expedite the process my wife drove ~250 miles round trip to get it. I know there are shops that rebuild for a lot less but time was not on our side.  I still have the old one.

 

Edited by jacwjames
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