Is Your 2006-2011 Impala Shifting Erratically?
If you’re experiencing harsh shifting, delayed gear engagement, or seeing a check engine light on the dashboard of your Chevrolet Impala, a failing Transmission Control Module (TCM) is the most likely culprit. The TCM is the electronic brain of your automatic transmission, responsible for controlling shift points, torque converter lockup, and line pressure. When it fails, it can mimic the symptoms of a major mechanical transmission failure, leading to drivability issues and potential damage if left unaddressed. This replacement T42 TCM, part number 24235340, is the definitive solution to restore your vehicle’s performance and reliability.
From the Diagnostic Bay
We had a 2009 Impala come into the shop that the owner was convinced needed a full transmission rebuild. It was slamming into gear and would occasionally get stuck in 3rd gear (limp mode). The diagnostic scan pulled a P0700 code, which is a general transmission fault, along with several solenoid circuit codes. Instead of jumping to the most expensive conclusion, we checked the TCM connections and data. The module was intermittently losing communication. We installed a VIN-programmed T42 module, cleared the codes, and took it for a test drive. The shifting was immediately smooth and precise, just like it left the factory. The customer saved thousands of dollars by correctly diagnosing the electronic failure instead of assuming a mechanical one. This is why a pre-programmed module is such a powerful and cost-effective repair.
Why Choose Our 2006-2011 Impala Transmission Module?
This isn’t just a replacement part; it’s a complete, plug-and-play solution. Every module is meticulously programmed to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This critical step ensures that the TCM has the correct software and calibrations for your Impala’s specific powertrain configuration. This eliminates the need for expensive trips to the dealership for programming, saving you time and money. Simply install the module, and you’re ready to get back on the road with confidence.
Symptoms of a Failing Impala TCM
- ✔️ Harsh, erratic, or delayed gear shifts.
- ✔️ Vehicle gets stuck in “limp mode,” often in 2nd or 3rd gear.
- ✔️ Check Engine Light or Transmission Warning Light is illuminated.
- ✔️ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults are present.
- ✔️ Inability to upshift or downshift properly.
- ✔️ A noticeable decrease in fuel economy.
- ✔️ Intermittent loss of communication with the module, causing unpredictable behavior.
Installation and Fitment
For the 2006-2011 Chevrolet Impala, this 2006-2011 Impala Transmission Module is typically located inside or below the air cleaner housing in the engine bay, making it accessible for a straightforward DIY installation. The process usually takes less than 30 minutes with basic hand tools. We recommend disconnecting the battery before starting the replacement to allow the vehicle’s systems to reset. After installation, use a standard OBD2 scan tool to clear any stored fault codes. This module is a direct replacement for a wide range of GM vehicles using the T42 controller and 4-speed automatic transmissions like the 4L60E and 4L65E, and is interchangeable with part numbers 24252114, 24234503, 24230461, and more.
Don’t let a faulty TCM compromise your vehicle’s performance. By providing your VIN at checkout, you ensure you receive a perfectly matched and updated 2006-2011 Impala Transmission Module, ready for immediate installation. Restore the smooth, reliable operation of your vehicle today.
Frequently Asked Questions
What does VIN programming mean for my Impala?
VIN programming means we load your car’s specific factory software and calibrations onto the module before we ship it. This ensures it communicates perfectly with your Impala’s engine computer and other systems, providing optimal shift patterns and performance without any additional setup or dealer visits.
Is this a difficult part to install myself?
For most DIY mechanics, this is a relatively simple installation. On the 2006-2011 Impala, the TCM is located under the air cleaner housing. It involves removing the airbox, disconnecting a few electrical connectors, and unbolting the module. Basic hand tools are all that’s required, and the process typically takes under 30 minutes.
Will this module fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. Often, the problem is the TCM itself. If your diagnostics point to a faulty module, replacing it with our pre-programmed unit is a very effective way to resolve the P0700 code and any related solenoid or sensor codes.
Do I need to send my old module back?
No, there is no core charge for this part. You can keep your old module, which saves you the time, cost, and hassle of shipping a part back.
How can I be sure the TCM is the problem and not the transmission?
While a definitive diagnosis requires a professional scan tool, common indicators of a bad TCM include multiple, often intermittent, electronic fault codes (like for solenoids or sensors), and erratic behavior that isn’t consistent with a specific mechanical failure like a slipping clutch. If the transmission fluid is clean and at the proper level, and the issues are primarily electronic in nature, the TCM is the most probable cause.