Regain Control Over Your Impala’s Transmission
If your 2006-2011 Chevrolet Impala is suffering from unpredictable shifting, getting stuck in gear, or has an illuminated check engine light, a failing Transmission Control Module (TCM) is the most likely culprit. As a technician with over two decades of experience, I’ve seen how a faulty TCM can make a reliable car feel unsafe and unpredictable. This isn’t just an annoyance; it’s a critical failure that impacts performance, fuel economy, and drivability. This replacement T42 TCM, part number 24255280, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a hassle-free installation.
Case Study: A Tricky Diagnosis
A customer brought in their ’09 Impala with an intermittent problem: sometimes it would refuse to shift out of 2nd gear after warming up. They had already replaced two shift solenoids at another shop with no success. After connecting my scan tool, I noticed communication with the TCM was dropping out when the engine bay got hot. This is a classic sign of internal electronic failure in the module itself, not the solenoids. We installed a VIN-programmed 2006-2011 Impala TCM, and the problem was solved permanently. The pre-programming saved the customer a tow to the dealership and over $300 in programming fees.
Is Your Impala Exhibiting These Transmission Problems?
- ✔ Harsh, banging shifts or delayed gear engagement.
- ✔ The vehicle is stuck in “limp mode” and won’t shift past 2nd or 3rd gear.
- ✔ Check Engine Light is on with transmission-related Diagnostic Trouble Codes (DTCs) like P0700, P0750, P0753, or other solenoid circuit codes.
- ✔ A complete failure to shift up or down.
- ✔ Noticeably worse fuel mileage and a feeling of sluggishness.
- ✔ Intermittent loss of communication with the transmission module.
A Straightforward Guide to Installation
For the 2006-2011 Impala, this job is well within reach for a DIY mechanic. The module is located under the air cleaner housing, making access simple. The entire process should take less than 30 minutes.
- Safety First: Disconnect the negative terminal from your car’s battery to prevent any electrical shorts and to help reset the vehicle’s computer systems.
- Access the Module: Remove the air cleaner box assembly. You will see the TCM mounted nearby.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old TCM. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place. Securely reconnect the electrical connectors, ensuring they click into place.
- Final Steps: Reinstall the air cleaner box and reconnect the battery terminal. Start the vehicle and allow it to idle for a few minutes. If you have a basic scan tool, it’s good practice to clear any stored fault codes.
This replacement 2006-2011 Impala TCM is engineered to meet or exceed original equipment specifications, ensuring long-term reliability for the 4L60E or 4L65E transmission in your vehicle. Because it’s flashed with the latest GM software updates for your specific VIN, it corrects many factory drivability issues and ensures perfect communication between your engine and transmission.
Verified Vehicle Compatibility
This module is a direct-fit replacement for the following vehicles, among many others. For the 2006-2011 Impala, the TCM is located under the lower air cleaner housing.
- Chevrolet Impala: 2006-2011 (lower air cleaner housing)
- Chevrolet Monte Carlo: 2006-2007 (lower air cleaner housing)
- Buick Allure / LaCrosse: 2006-2009 (lower air cleaner housing)
- Pontiac Grand Prix: 2006-2008 (lower air cleaner housing)
- Chevrolet Cobalt & HHR, Pontiac G5 & G6, Saturn Ion: (LH strut tower)
- Chevrolet Silverado & GMC Sierra Trucks: (next to battery)
- Chevrolet Tahoe, Suburban, Yukon: (next to battery)
- This part is also interchangeable with part numbers: 24252114, 24234503, 24230461, 24234274, 24235340, 24256960, and more.
Frequently Asked Questions
What does VIN programming mean for me?
It means this module is ready for installation right out of the box. We flash it with your car’s unique Vehicle Identification Number (VIN) and the latest GM software. This ensures it communicates perfectly with your car’s other computers, avoiding the need for an expensive trip to the dealership for programming.
Is this a difficult part to install on my Impala?
No, this is considered a beginner-to-intermediate level repair. For the Impala, the TCM is located under the air cleaner box, which is easily removed with basic hand tools. The entire job typically takes less than 30 minutes.
Will this fix my P0700 trouble code?
A P0700 code is a general fault request from the TCM to the main engine computer (ECM) to turn on the check engine light. While this module often resolves the underlying issue causing the P0700, you should scan for more specific P-codes (like P0753, P0758, etc.) to confirm the TCM is the root cause. In most cases of electronic failure, this part is the solution.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep or dispose of your old module, making the process faster and more convenient for you.
How do I provide my VIN for programming?
During the checkout process, you will be prompted to enter your vehicle’s 17-digit VIN. Please double-check it for accuracy to ensure correct programming.