2006-2009 Allure Transmission Control Module 24238856 Programmed To Your VIN TCM

End Your Transmission Nightmares

Fix the harsh shifting and check engine light in your Buick Allure with this VIN-programmed Transmission Control Module. It arrives ready for a plug-and-play installation, requiring no expensive dealership visits. This OEM-quality part restores smooth, reliable performance and is the permanent solution to common transmission faults. Order today for a fast, simple repair!

$79.95

+11.99 USPS Priority Shipping

Availability: In stock



SKU: 591-07270-346 Categories: ,
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Restore Your Buick’s Performance with a Pre-Programmed TCM

If your 2006-2009 Buick Allure is suffering from erratic shifting, getting stuck in gear, or has an illuminated check engine light, a failing Transmission Control Module (TCM) is the likely culprit. As an automotive technician with over two decades of experience, I’ve seen firsthand how a faulty TCM can sideline an otherwise reliable vehicle. This T42 Transmission Control Module, part number 24238856, is the definitive, hassle-free solution. It arrives expertly programmed to your vehicle’s specific VIN, eliminating the need for a costly trip to the dealership and getting you back on the road with confidence.

Case Study: A Tricky Diagnosis

A customer brought in their 2008 Buick Allure with a complaint that was driving them crazy: intermittent, hard 1-2 shifts and occasional failure to shift out of 2nd gear, but only after the car was fully warmed up. They had no persistent check engine light, just a stored P0700 (Transmission Control System Malfunction) code. After checking fluid levels and solenoids, which all tested fine, we suspected the TCM. Heat soak can cause internal circuit failures in these modules. We replaced it with one of our VIN-programmed units. The customer reported back a week later that the car drove like new, with every shift being smooth and predictable. This pre-programmed module saved them from a lengthy and expensive diagnostic process at the dealer.

Is Your Buick Allure Showing These Symptoms?

A failing TCM doesn’t just affect performance; it can be a safety concern. Here are the common signs that your 2006-2009 Allure TCM needs replacement:

  • ✔ Harsh, slamming, or delayed gear shifts.
  • ✔ Vehicle is stuck in “limp mode” (usually second or third gear).
  • ✔ Check Engine Light or Transmission Warning Light is on.
  • ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750-P0758, or other solenoid-related faults are present.
  • ✔ Complete loss of shifting capability or failure to engage gears.
  • ✔ A noticeable drop in fuel economy.
  • ✔ Inconsistent communication with the scan tool.

A Straightforward Guide to Installation

For the Buick Allure, this is a job most DIYers can handle in their own driveway in under an hour. The module is conveniently located, making for a simple swap.

  1. Safety First: Disconnect the negative terminal from your car’s battery to prevent any electrical shorts and to help reset the vehicle’s adaptive memory.
  2. Locate the Module: On your 2006-2009 Buick Allure, the TCM is typically found attached to the lower air cleaner housing in the engine bay.
  3. Disconnect and Remove: Carefully unclip the wiring harness connectors. Then, unbolt the old module from its mounting bracket.
  4. Install the New Module: Bolt the new VIN-programmed TCM into place and securely reconnect the wiring harnesses. Ensure the clips click into place.
  5. Final Steps: Reconnect the battery terminal. Start the vehicle and let it idle for a few minutes. While the module is plug-and-play, it’s good practice to use a basic scan tool to clear any old fault codes from the system.

Will This Fit My Vehicle?

This module is a direct-fit replacement for a wide range of General Motors vehicles. While it is guaranteed to work for the specified model, it also fits the following:

This part will fit these makes and models with these options
ALLURE 06-09 Transmission; (lower air cleaner housing)
LACROSSE 06-09 Transmission; (lower air cleaner housing)
LUCERNE 06-11 Transmission; (LH engine compartment)
IMPALA 06-11 Transmission; (lower air cleaner housing)
MONTE CARLO 06-07 Transmission; (lower air cleaner housing)
GRAND PRIX 06-08 Transmission; (lower air cleaner housing)
CHEVROLET SILVERADO & GMC SIERRA 1500/2500/3500 (various years, typically next to battery)
CHEVROLET TAHOE, SUBURBAN & GMC YUKON (various years, typically next to battery)
CHEVROLET EXPRESS & GMC SAVANA VANS (06-14, RH engine compartment)
AND MANY MORE GM MODELS. Please verify your part number (24238856) or contact us with your VIN.

Frequently Asked Questions

Frequently Asked Questions

Do I need to do any programming after installation?

No. This module is pre-programmed to your vehicle’s VIN before shipping. It is a true plug-and-play solution, saving you a trip to the dealership.

What is the main benefit of VIN programming?

VIN programming ensures the module has the correct software and calibrations specifically for your vehicle’s configuration (engine, transmission, options). This guarantees optimal shift quality, fuel economy, and overall performance from the moment you install it.

Is a core charge required for my old part?

No, there is no core charge. You can keep or dispose of your old module without the hassle of sending it back.

Will this fix my P0700 check engine light code?

Yes, if the code is being caused by a faulty TCM. The P0700 code is a general fault request from the TCM to the main engine computer. Replacing a failed TCM is the correct fix for this code.

How difficult is the installation for a 2006-2009 Allure TCM?

It’s one of the easier module replacements. The TCM is located under the air cleaner box, which is easily accessible. Basic hand tools are all that’s required, and the job typically takes less than an hour.

Genuine OEM

Yes

Year
Brand

GM

MPN

24238856

Condition

Refurbished

Year

2006 – 2009

Model

ALLURE

Hardware Type

Interchange part number

Manufacturer Part Number

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