Lost communication to TCM module

2005 CHEVROLET CORVETTE
86,000 MILES • 6.0L • V8 • 2WD • AUTOMATIC
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COLTEN BYRD
  • MEMBER
  • 2 POSTS
All lights pop up on my dash including cel, plugged code reader in, telling me i lost communication to transmission control module. Car will shake at about 15 mph. Not sure what the problem would be. Unhooked module, checked it out, everything looked good. Still have the same issues.
May 13, 2019 at 12:40 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,627 POSTS
Hello,

We need to check power and grounds to the TCM which is located behind the right fend near the battery. Here is the transmission wiring diagrams so you can see how the stem works with a guide to help you check the wiring. Check the ECM/TCM and ACC/TCM fuses first.

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.
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May 14, 2019 at 4:23 AM
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COLTEN BYRD
  • MEMBER
  • 2 POSTS
Yeah everything checked out fine on grounds and fuses. I'm guessing it's the TCM itself needs to be replaced. Thanks for the info.
May 14, 2019 at 5:27 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,627 POSTS
Yep if everything checks out replace the TCM please let me know how it goes.
May 15, 2019 at 3:01 AM
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