Restore Smooth, Reliable Shifting to Your Buick
Is your 2005 Buick Allure suffering from erratic shifting, getting stuck in gear, or displaying a check engine light with transmission codes? These are classic signs of a failing Transmission Control Module (TCM). Driving with a faulty TCM isn’t just frustrating; it can put excessive strain on your transmission’s mechanical parts, leading to more expensive repairs down the road. This replacement TCM is the definitive solution, arriving at your door pre-programmed with the latest GM software specifically for your vehicle’s VIN.
As a technician with over two decades of experience, I’ve seen countless drivers spend a fortune at dealerships for this exact issue. The process usually involves a hefty diagnostic fee, the cost of the part, and then several hundred dollars more for programming. We eliminate that final, costly step. By providing us with your VIN during checkout, you receive a module that is truly plug-and-play, restoring your transmission’s original performance and efficiency.
Is Your Vehicle Showing These Symptoms?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, a faulty module is the likely culprit. I’ve personally diagnosed these issues on hundreds of GM vehicles from this era.
- ✔ Harsh or delayed shifting between gears
- ✔ The vehicle feels stuck in one gear (often called “limp mode”)
- ✔ Unexplained loss of power or poor fuel economy
- ✔ Check Engine Light is on with transmission-specific codes
- ✔ Common Diagnostic Trouble Codes (DTCs) include P0700, P0751, P0756, U0101
A Technician’s Notebook
I remember a 2005 Pontiac Grand Prix (which uses this same TCM) that came into the shop stuck in 3rd gear. The customer was worried he needed a full transmission rebuild, a multi-thousand-dollar job. After a quick scan, I pulled code P0756 (Shift Solenoid B Performance/Stuck Off). While the code points to a solenoid, my experience with these 4T65-E transmissions told me to check the source: the TCM. The module’s internal drivers for the solenoids are a known failure point. We installed one of our pre-programmed TCMs, and in under an hour, the car was shifting perfectly through all gears. The customer saved a massive amount of money and stress by correctly diagnosing the electronic failure first.
A Straightforward Guide to Installation
Installing your new 2005 Allure TCM is a manageable job for a DIY enthusiast. For the Allure, LaCrosse, and Grand Prix, the module is conveniently located under the lower air cleaner housing, making access relatively simple.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the TCM: On your 2005 Allure, you will need to remove the air cleaner box assembly to access the TCM mounted below it.
- Disconnect Wiring: Carefully unclip the electrical connectors from the old TCM. Press the release tabs firmly and pull straight out. Never tug on the wires themselves.
- Remove the Old Module: Unbolt the old TCM from its mounting bracket. Keep the hardware, as you may need to reuse it.
- Install the New Module: Mount your new, pre-programmed TCM onto the bracket and secure it with the bolts.
- Reconnect and Finalize: Plug the wiring harnesses back into the new module until they click securely in place. Reinstall the air cleaner assembly and reconnect the negative battery terminal. The vehicle is now ready to start.
Guaranteed Vehicle Compatibility
This module is a direct-fit replacement for a wide range of GM vehicles and is cross-compatible with multiple part numbers, including 24223112, 24226863, 24233595, 24234189, 24239427, YBWW, YDFC, YDFD, YDLT, YJHY, YKTB, and YKTF. It is guaranteed to fit the following models:
- 2005 Allure: Transmission; (lower air cleaner housing)
- 2005 LaCrosse: Transmission; (3.6L), (lower air cleaner housing)
- 2005 Grand Prix: Transmission; (lower air cleaner housing)
- 2005 Rainier: Transmission
- 2005 Rendezvous: Transmission; (3.6L), (air cleaner box)
- 2005 Corvette: Transmission; (LH frame rail)
- 2005 GTO: Transmission
- 2005 Cobalt / Ion / Pursuit: Transmission; (behind LH strut tower)
- 2005 Envoy / Trailblazer (XL, EXT, XUV): Transmission; (LH engine compartment), (8 cylinder)
Your Reliable Path to a Lasting Repair
Choosing this pre-programmed 2005 Allure TCM is the smartest way to fix your transmission issues. You get a quality part loaded with the newest software, matched precisely to your car, all without the extra time and expense of a dealership visit. Take control of your repair and get your vehicle driving like new again.
Do I need to do any programming after I receive this TCM?
Do I need to do any programming after I receive this TCM?
No. This module is fully programmed to your vehicle’s specific VIN before it is shipped. It is ready for installation right out of the box, with no additional programming or dealer visits required.
What information do you need from me?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). This ensures we load the exact correct software for your car’s specific configuration.
Is this a new or used part?
This is a high-quality, inspected, and tested recycled OEM part. Each module is verified to be fully functional before being programmed with the latest GM software updates for optimal performance and longevity.
Will this fix a ‘No Communication’ issue with my old TCM?
Yes, in most cases. A complete failure of the TCM often results in a ‘no communication’ error (like code U0101) when a scan tool is connected. Replacing the faulty module with this pre-programmed unit will restore communication and normal operation.