What is the TCM (Transmission module)?

Old 05-23-2009, 02:05 PM
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Join Date: May 2009
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Default What is the TCM (Transmission module)?

Hi, I took my car into VW because when my 2002 GTi 1.8T is not warm, the transmission won't make it's shifts. Once it is warm though, the car runs - no problem.

Anyway, the service manager at VW recommends to, "replace the TCM and retest the car" but if it doesn't fix it 100% then we would have to replace the transmission, "which is more likely the repair".

Obviously, replacing the transmission cost thousands more.

Has anyone else had this problem? I saw a TCM on eBay; is it a relatively easy fix?

Let me know. Thanks!
Old 05-23-2009, 06:23 PM
racerx002's Avatar
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I love dealer advice. If you haven't changed the trans fluid lately then do that. Either way, get a bottle of Lucas Oil Anti-slip fluid. And I am 95% sure that will work. $10 is better than $3,000.
Old 12-30-2014, 10:45 AM
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Default TRamsmition module

2002 VW GTI 1.8 Turbo (automatic) 78500 miles
I have the same problem
When the car is warm it shifts but in the morning it wont.
Anybody speaks Spanish?
Old 12-30-2014, 06:05 PM
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Welcome to the forum. Name:  VWwelcome.gif
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You've dragged up an old thread.

Transmission Control Module (TCM) (J217)

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