Restore Peak Performance to Your Chevrolet Impala
If your 2006-2011 Chevrolet Impala is suffering from erratic shifting, getting stuck in gear, or displaying transmission-related warning lights, a failing Transmission Control Module (TCM) is the most likely culprit. The TCM is the electronic brain of your automatic transmission, responsible for orchestrating smooth gear changes, managing torque converter lockup, and ensuring overall powertrain efficiency. When it fails, it can cause a host of frustrating and potentially damaging issues. This genuine OEM-quality T42 TCM, service number 24239224, is the definitive solution to restore your vehicle’s factory performance and drivability.
From the Diagnostic Bay
We had a 2009 Impala come into the shop that the owner was ready to give up on. It would shift hard from first to second, and sometimes it would feel like it was slipping out of gear entirely on the highway. The check engine light was on with a P0700 code. After checking the fluid and solenoids, we pinpointed the TCM. The internal circuitry had developed an intermittent fault. We installed one of our VIN-programmed T42 modules. The installation took less than 30 minutes since it’s located right under the air cleaner box. After a quick battery disconnect to clear the adaptive memory, the car drove like it just left the showroom. The customer was thrilled to have his reliable daily driver back without a costly trip to the dealership.
Is Your Impala Exhibiting These Symptoms?
A faulty TCM can manifest in several ways. If you’re experiencing any of the following, it’s a strong indication that your module needs replacement. Ignoring these signs can lead to more severe transmission damage and costly repairs down the line.
- ✔️ Harsh, delayed, or unpredictable gear shifts.
- ✔️ The vehicle gets stuck in “limp mode,” often in 2nd or 3rd gear.
- ✔️ Check Engine Light or Transmission Warning Light is illuminated on the dashboard.
- ✔️ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, P0753, P0758, or other solenoid-related faults are present.
- ✔️ A noticeable decrease in fuel economy.
- ✔️ The transmission seems to slip between gears or fails to engage properly from a stop.
- ✔️ Complete failure to shift gears, either up or down.
The Superior Solution: A Pre-Programmed Impala Transmission Module
Don’t settle for a generic module that requires an expensive trip to the dealership for programming. Our T42 TCMs are meticulously programmed to your vehicle’s specific Vehicle Identification Number (VIN) before they ship. This critical step ensures that the module communicates flawlessly with your Impala’s Engine Control Unit (ECU) and other onboard systems, using the latest software updates from General Motors. This means no extra costs, no special tools, and no frustrating compatibility issues—just a straightforward, plug-and-play installation.
This module is a direct replacement for a wide range of GM vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. It is interchangeable with numerous part numbers, including 24252114, 24234503, 24230461, 24239224, and more, guaranteeing a perfect fit for your specific application.
Simple Installation Process
For the 2006-2011 Chevrolet Impala, the TCM is conveniently located under the lower air cleaner housing in the engine compartment. The replacement process is simple enough for a seasoned DIYer or any professional technician.
- Safety First: Disconnect the negative terminal of your vehicle’s battery.
- Access the Module: Remove the air cleaner assembly to gain access to the TCM.
- Disconnect and Remove: Carefully unplug the electrical connectors and unbolt the old module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed module in place and securely reconnect the electrical harnesses.
- Final Steps: Reinstall the air cleaner assembly and reconnect the battery. It’s recommended to use a scan tool to clear any stored DTCs, but the system will often reset itself after a few drive cycles.
Frequently Asked Questions
What does ‘VIN Programmed’ mean for my Impala?
It means we load your car’s specific Vehicle Identification Number (VIN) and the latest GM software onto the module before shipping. This makes it a true plug-and-play part, eliminating the need for dealership programming and ensuring it works perfectly with your vehicle’s engine and systems right out of the box.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault request from the TCM to the ECU. While this module often resolves the underlying cause of a P0700 (like a faulty solenoid driver circuit inside the TCM), you should ensure other components like wiring and solenoids are in good condition. In most cases, a failing TCM is the root cause.
Is this a difficult part to install myself?
For most individuals with basic mechanical skills and tools, this is a straightforward installation. On the 2006-2011 Impala, it’s located under the air filter box and is easily accessible. The entire process typically takes under an hour.
Do I need to return my old TCM (core charge)?
No, there is absolutely no core charge. You can keep your old part, which saves you the time, money, and hassle of shipping it back.
How do I know if this part number is correct for my vehicle?
This module, 24239224, is part of the T42 family and interchanges with many other service numbers. The best way to ensure compatibility is to match it with the part number on your existing module or provide us with your VIN. Our comprehensive fitment data covers a wide range of GM models, including the Impala, Monte Carlo, LaCrosse, and more.