Lost communication with TCM?

Tiny
OMER BARKER
  • MEMBER
  • 2014 BUICK VERANO
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 152,000 MILES
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.
Friday, January 31st, 2025 AT 11:19 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,584 POSTS
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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Saturday, February 1st, 2025 AT 11:36 AM

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