Where is the TCM located?

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

JACOBANDNICKOLAS

MECHANIC
109,911 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.

Images (Click to make bigger)

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Sunday, January 28th, 2024 AT 8:39 PM

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

JACOBANDNICKOLAS

MECHANIC
109,911 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.

Images (Click to make bigger)