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Where is the TCM located?

Tiny
JT601
  • MEMBER
  • 2006 BUICK LUCERNE
  • 3.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 154,000 MILES
Where is the TCM located on the car listed above?
Sunday, January 28th, 2024 AT 12:49 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Hi,

If you open the hood, it is located on the driver's side of the strut tower. I attached two pics below. The first pic shows the location of the TCM and its mount. Picture two include the directions for replacement.

If you plan to replace the module, it will need to be programmed to your vehicle.

Let me know if this helps.

Joe

See pics below.
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Sunday, January 28th, 2024 AT 8:39 PM
Tiny
JT601
  • MEMBER
  • 2 POSTS
I saw this picture earlier. That's not where it's at.
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Sunday, January 28th, 2024 AT 8:41 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
If it isn't there, there may have been a different transmission used. If that is the case, the transmission is controlled by the powertrain control module (PCM/ECM) which is located in the air cleaner housing. See pic 1 below.

Also, pics 2 and 3 are the wiring schematics.

Let me know if this helps.

Joe

See pics below.
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Sunday, January 28th, 2024 AT 9:19 PM

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