Restore Flawless Shifting to Your 2005 Buick Allure
If you’re dealing with the frustration of a transmission that slams into gear, hesitates, or throws a check engine light, you’ve come to the right place. As a technician with over two decades of experience under the hood, I’ve seen firsthand how a failing Transmission Control Module (TCM) can make a great car feel unreliable. This isn’t just a part; it’s the solution to get your vehicle’s performance and your peace of mind back. This module is the brain of your automatic transmission, and when it fails, the symptoms can be alarming. We take the guesswork and the expensive dealership trip out of the equation.
This is a direct-fit replacement 2005 Allure Transmission Control Module that arrives at your door ready for installation. The biggest hurdle in replacing a modern electronic module is the programming—a step that typically requires specialized, costly equipment. We handle that for you. Simply provide us with your vehicle’s VIN during checkout, and our experts will flash the module with the latest, most stable software updates directly from GM. This ensures perfect communication between the engine and transmission, restoring the smooth, precise shifting you expect from your car.
From the Diagnostic Bay: The Intermittent Shifting Mystery
A customer brought in a 2005 Buick Rendezvous (which uses the same family of TCM) with a complaint that stumped two other shops. The car would intermittently shift hard from 1st to 2nd gear and sometimes feel like it was slipping. No consistent check engine light, just unpredictable behavior. The other shops suggested a full transmission rebuild, a multi-thousand-dollar guess. In my bay, I hooked up my professional scan tool and monitored the TCM data stream. I noticed the commanded gear and the actual gear would momentarily disagree, and the line pressure command would spike just before a harsh shift. This pointed directly to an internal processing fault in the TCM, not a mechanical failure in the transmission. We installed a VIN-programmed module just like this one, and the problem was solved for a fraction of the cost of a new transmission. This is a classic example of how the right part, correctly programmed, is the true fix.
Is Your Vehicle Showing These Symptoms?
A faulty TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution:
- âś” Harsh or erratic shifting between gears
- âś” Delayed engagement when shifting from Park to Drive or Reverse
- âś” The transmission getting stuck in one gear (limp mode)
- âś” Check Engine Light illuminated with transmission-related Diagnostic Trouble Codes (DTCs) such as P0700, P0751, P0756, or U0101 (Lost Communication with TCM)
- âś” Reduced fuel economy due to inefficient shifting
- âś” Inaccurate gear display on the dashboard
Your Straightforward Installation Guide
Installing your new 2005 Allure Transmission Control Module is a manageable job for a confident DIYer. Since we’ve handled the programming, you won’t need any special computer equipment. For the 2005 Allure, the TCM is typically located under the lower air cleaner housing.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post.
- Access the Module: Remove the engine air cleaner assembly to gain clear access to the TCM mounted below it.
- Disconnect Electrical Connectors: Carefully press the release tabs and unplug the wiring harnesses from the old TCM. Inspect the connectors for any corrosion or damage.
- Unbolt the Old TCM: Remove the mounting bolts or nuts holding the module in place. Set the old module aside.
- Install the New Module: Mount your new, pre-programmed TCM in the same location and secure it with the original hardware.
- Reconnect Everything: Plug the electrical connectors firmly back into the new module until they click. Reinstall the air cleaner assembly.
- Final Step: Reconnect the negative battery terminal. The vehicle is now ready to be started. It may take a short drive for the transmission to complete its relearn process with the new module.
Verified Vehicle Compatibility
This module is a direct replacement for multiple part numbers and fits a wide range of 2005 GM vehicles. Please confirm your vehicle is on this list. This part is compatible with service numbers: 24223112, 24226863, 24233595, 24234189, 24239427, YBWW, YDFC, YDFD, YDLT, YJHY, YKTB, YKTF.
- 2005 Buick Allure: Transmission; (lower air cleaner housing)
- 2005 Buick LaCrosse: Transmission; (3.6L), (lower air cleaner housing)
- 2005 Buick Rainier: Transmission
- 2005 Buick Rendezvous: Transmission; (3.6L), (air cleaner box)
- 2005 Chevrolet Cobalt: Transmission; (behind LH strut tower)
- 2005 Chevrolet Corvette: Transmission; (LH frame rail)
- 2005 Chevrolet Trailblazer EXT: Transmission; (LH engine compartment), (8 cylinder)
- 2005 GMC Envoy / Envoy XL / Envoy XUV: Transmission; (LH engine compartment), (8 cylinder)
- 2005 Pontiac GTO: Transmission
- 2005 Pontiac Grand Prix: Transmission; (lower air cleaner housing)
- 2005 Pontiac Pursuit: Transmission; (behind LH strut tower)
- 2005 Saturn ION: Transmission; (behind LH strut tower)
Do I need to program this module?
No. This is the core benefit of our service. We program the module to your car’s specific VIN before shipping it. It arrives ready to install, saving you a trip to the dealership and hundreds in programming fees.
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 is essential for us to load the correct GM software for your car’s specific configuration.
Where is the TCM on a 2005 Buick Allure?
On the 2005 Allure, the Transmission Control Module is located in the engine bay, underneath the lower portion of the air cleaner housing.
Will this fix my check engine light?
If your check engine light is on due to a fault within the original TCM (e.g., codes like U0101 or P0700 series), then replacing it with this correctly programmed module should resolve the issue and allow the light to be cleared.
Is this a difficult part to replace myself?
For someone with basic mechanical skills and common hand tools, this is a very straightforward replacement. The most significant part of the job is accessing the module, and since no programming is required, it’s a true plug-and-play repair.