Code U0101, where is the TCM located?

Tiny
RAYANNSTEARNS
  • MEMBER
  • 2011 BUICK REGAL
  • 2.4L
  • V6
  • 2WD
  • AUTOMATIC
  • 168,289 MILES
Had a leak from transmission in the Axle seal. Fixed it. Now the car is throwing U0101 code. We can’t find info on where the TCM is located and how to go about fixing. We think it’s something connected to the TCM that is causing a communication issue. Any advice or help!
Sunday, September 10th, 2023 AT 12:23 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
It looks like there are two they talk about, one is on top of the transmission at the shift control lever and the other is the shifter assembly, they both contain electronics. Check out the images (below). Please let us know if you need anything else to get the problem fixed.
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Monday, September 11th, 2023 AT 1:34 PM

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