TCM location?

Tiny
LIZB2986
  • MEMBER
  • 2011 CHEVROLET MALIBU
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 143,117 MILES
My Malibu feels like it doesnt want to go in gear when drving. Once I do get it in and out of 1st gear she drives fine, that is until I have to come to a stop or drive up a hill. My OBD II is popping the codes listed in the attatched image. Service ESQ message is also displyed on the dash. Ive checked all fuses they were all good.

Im hoping I can check the wiring and connectors in the TCM before spemding a few hundred replacing it.

However, I cant find any tutorials for my year, make and model. Can anyone tell me where the TCM is located? Any diagrams would be a plus.
Side note; it is a 6 speed.
Wednesday, August 20th, 2025 AT 9:07 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
I don't see the images can you please reload it? I can help you more if I knew the code numbers, the TCM is located inside the transmission at the valve body, here is the location inside the unit in the images below.
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Thursday, August 21st, 2025 AT 7:42 AM
Tiny
LIZB2986
  • MEMBER
  • 2 POSTS
Im not sure why the images wont upload. My posts says there are images but I cant see them I willl add the codes here. TCM location is exactly where I was dreading it woukd be. Thank you for the diagram.

P0601-00 Control Module Read Only Memory (ROM) Transmission Control Module (TCM)

P0700-00 Malfunction Indicator Lamp (MIL) Illumination 2036

2036 Description: Internal Electronic
Performance 2

1059 Description: Communication
Fault

3017 Description: Internal Electronic
Performance 1

1053 Description: Preload Failure
Region 2
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Thursday, August 21st, 2025 AT 10:53 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Essentially, the TCM is failing its own self-test. It’s not about sensors or wiring in most cases it points to an internal TCM fault, clear the codes once the job is completed.
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Thursday, August 21st, 2025 AT 6:57 PM

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