Restore Your Buick’s Performance and Drivability
Are you tired of dealing with the frustrating and unpredictable behavior of your 2005 Buick Allure’s transmission? Symptoms like harsh, delayed shifts, getting stuck in one gear, or a persistent check engine light can point directly to a failing Transmission Control Module (TCM). In my 20+ years of automotive diagnostics, I’ve seen how a faulty TCM can mimic more severe mechanical issues, leading to costly and unnecessary repairs. This module is the brain of your automatic transmission, and when it falters, the entire driving experience suffers.
We offer a dependable and straightforward solution: a replacement TCM, part number 24239427, that arrives at your door fully programmed to your vehicle. Simply provide us with your Vehicle Identification Number (VIN) during checkout, and our technicians will flash the module with the latest, most stable software updates directly from GM. This critical step ensures perfect communication between the TCM, the engine, and the rest of your vehicle’s systems, restoring the smooth, precise shifting you expect.
Case Study: The Ghost in the Grand Prix
A customer brought in a 2005 Pontiac Grand Prix—which uses the same TCM as the Allure—with a complaint of intermittent, bone-jarring 1-2 shifts and a P0756 code (Shift Solenoid B Performance/Stuck Off). He had already replaced the solenoid pack twice with no change. The symptoms were inconsistent, making diagnosis a headache. After verifying the wiring and internal hydraulics were sound, I suspected the TCM. The internal drivers that control the solenoids can weaken over time, sending erratic signals. We installed a VIN-programmed TCM, and the problem vanished instantly. The car shifted perfectly. This saved the customer from a potential transmission rebuild, proving that starting with the ‘brain’ is often the smartest fix.
Is Your Vehicle Showing These Signs of TCM Failure?
- ✔ Abrupt, hard, or jerky gear shifts.
- ✔ The transmission seems to slip or hesitate between gears.
- ✔ Vehicle gets stuck in a single gear (often called “limp mode”).
- ✔ Check Engine Light is on with transmission-related Diagnostic Trouble Codes (DTCs) like P0700, U0101, or solenoid performance codes.
- ✔ Poor acceleration and decreased fuel economy.
- ✔ Inaccurate or erratic speedometer readings.
Why a Pre-Programmed 2005 Allure TCM is Your Best Solution
The single biggest hurdle in replacing a modern vehicle module is the need for specialized, expensive programming. A new, unprogrammed TCM from a dealership is just a metal box; it requires a high-end scan tool and a software subscription to make it work. Our process eliminates that entire step. By flashing the module to your specific VIN before it ships, we provide a true plug-and-play part. This saves you from dealership labor costs, towing fees, and the headache of coordinating a programming appointment. It’s the most efficient and cost-effective way to get your car back on the road.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system to discharge.
- ✔ Locate the TCM: On your 2005 Buick Allure, the TCM is typically found attached to the lower air cleaner housing in the engine bay.
- ✔ Disconnect Connectors: Carefully unclip the electrical wiring harnesses from the old TCM. Pay attention to the locking tabs to avoid damage.
- ✔ Remove the Old Module: Unbolt the old TCM from its mounting bracket. It’s usually held in place by a few small bolts or nuts.
- ✔ Install the New TCM: Mount your new, pre-programmed TCM onto the bracket and secure it with the original hardware.
- ✔ Reconnect Everything: Firmly plug the wiring harnesses back into the new module. Reconnect the negative battery terminal.
- ✔ Final Check: Start the vehicle. The check engine light should be off, and a short test drive should confirm that shifting is smooth and correct.
Verified Vehicle Compatibility
This module is a direct-fit replacement for the following vehicles. Please ensure your vehicle and options match the list below. It is also a compatible replacement for part numbers: 24223112, 24226863, 24233595, 24234189, YBWW, YDFC, YDFD, YDLT, YJHY, YKTB, YKTF.
COBALT 2005: Transmission; (LH strut tower)
CORVETTE 2005: Transmission; (LH frame rail)
ENVOY 2005: Transmission; (LH engine compartment), (8 cylinder)
ENVOY XL 2005: Transmission; (LH engine compartment), (8 cylinder)
ENVOY XUV 2005: Transmission; (LH engine compartment), (8 cylinder)
GTO 2005: Transmission
GRAND PRIX 2005: Transmission; (lower air cleaner housing)
ION 2005: Transmission; (behind LH strut tower)
LACROSSE 2005: Transmission; (3.6L), (lower air cleaner housing)
PURSUIT 2005: Transmission; (LH strut tower)
RAINIER 2005: Transmission
RENDEZVOUS 2004-2005: Transmission; (3.6L), (air cleaner box)
TRAILBLAZER EXT 2005: Transmission; (LH engine compartment), (8 cylinder)
Do I need to program this TCM?
No. This is the main benefit of our service. We program the module to your car’s specific VIN before shipping it. It arrives ready for installation right out of the box.
Where is the TCM located on a 2005 Buick Allure?
You can find the Transmission Control Module located under the lower air cleaner housing in the engine compartment.
What information do you need from me?
After you complete your purchase, you will need to provide us with your 17-digit Vehicle Identification Number (VIN). This is essential for us to program the module correctly for your vehicle.
Will this fix my transmission problems?
If your vehicle’s issues, such as hard shifting or specific diagnostic codes, are caused by a faulty TCM, then this part is the correct solution. It resolves failures within the module’s electronics and software.
Is this an easy part for a DIYer to replace?
Yes, for most individuals with basic mechanical skills. The location is generally accessible, and since no programming is required, it’s a simple process of disconnecting the old part and connecting the new one. The entire job typically takes less than an hour.