Lost communication with TCM?

2014 BUICK VERANO
152,000 MILES • 4 CYL • 2WD • AUTOMATIC
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OMER BARKER
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  • 1 POST
I have checked the power and ground going to the TCM. It's good. Everything I have found online says, the TCM is under the left side of the dash. I found nothing. I tested the plug I found on the front side of the transmission.
Jan 31, 2025 at 11:19 AM
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STRAILER
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Yep, if the TCM has power and ground it has gone out, this part is inside the transmission here is what it looks like and the instructions on how to replace it as well, this is a common failure FYI. Check out the images (below). Please let us know what happens.
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Feb 1, 2025 at 11:36 AM