Restore Your Impala’s Shifting Performance
If your 2006-2011 Chevrolet Impala is suffering from harsh shifting, getting stuck in gear, or has an illuminated check engine light, a failing Transmission Control Module (TCM) is a very likely culprit. As an automotive diagnostician with over two decades of experience, I’ve seen countless GM vehicles with these exact issues. This T42 TCM, part number 24234503, is the definitive solution to restore the crisp, reliable shifting you expect from your vehicle. It arrives expertly programmed to your specific Vehicle Identification Number (VIN), eliminating the need for expensive dealership visits and ensuring a true plug-and-play repair.
Case Study: A Tricky Diagnosis
A customer brought in a 2009 Impala with a classic complaint: it would slam into gear from a stop and sometimes refuse to shift past 2nd gear. The dash was lit up with a Check Engine light, and my scan tool pulled a P0700 (Transmission Control System Malfunction) and a P0752 (Shift Solenoid ‘A’ Stuck On). The owner was worried he needed a full transmission rebuild. However, after 20 years in the bay, I know these T42 modules are a common failure point. The internal circuits can degrade from heat and vibration, causing erratic signals to the solenoids. We installed one of our VIN-programmed modules, cleared the codes, and the car shifted perfectly. It’s a 30-minute fix that saved the customer thousands over an unnecessary transmission replacement.
Is Your Impala Exhibiting These Transmission Problems?
A faulty TCM can manifest in several ways, often mistaken for more severe mechanical failures. Before you consider a costly transmission overhaul, check if your car is showing these common signs of a bad 2006-2011 Impala TCM.
- ✔ Harsh, banging, or erratic gear shifts.
- ✔ Vehicle is stuck in “limp mode” (usually 2nd or 3rd gear).
- ✔ Check Engine Light or Transmission Warning Light is on.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0751, P0752, P0756, or other solenoid-related codes.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ Poor fuel economy and a feeling of lost power.
- ✔ Complete loss of communication with the transmission module.
A Straightforward Guide to Installation
One of the biggest benefits of this module is its simple installation, which most DIYers can complete in their driveway in under 30 minutes. For the 2006-2011 Impala, the TCM is conveniently located.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: On your Impala, the TCM is typically found bolted to the lower air cleaner housing in the engine bay.
- Disconnect and Remove: Carefully unplug the electrical connectors. Use a socket wrench to remove the bolts holding the old module in place.
- Install the New TCM: Mount your new, VIN-programmed module in the same location and securely fasten the bolts. Reconnect the electrical harnesses.
- Final Steps: Reconnect the battery terminal. While our programming handles the critical setup, it’s good practice to use a basic scan tool to clear any stored fault codes from the vehicle’s memory.
Verified Vehicle Compatibility
This T42 TCM is a direct-fit replacement for the 2006-2011 Impala TCM and is also compatible with a wide range of other General Motors vehicles. It interchanges with part numbers including 24252114, 24230461, 24242391, and more. Below is a partial list of compatible models. Please verify your part number to ensure a perfect match.
- Chevrolet Impala (2006-2011) – Transmission; (lower air cleaner housing)
- Chevrolet Monte Carlo (2006-2007) – Transmission; (lower air cleaner housing)
- Buick LaCrosse / Allure (2006-2009) – Transmission; (lower air cleaner housing)
- Pontiac Grand Prix (2006-2008) – Transmission; (lower air cleaner housing)
- Chevrolet Cobalt & HHR (2006-2011)
- GMC & Chevrolet Trucks/SUVs (Check specific model/year)
- And many more GM models from 2006-2014.
Frequently Asked Questions
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean for me?
It means we load your vehicle’s specific VIN into the module before shipping it. This ensures it communicates perfectly with your car’s engine computer and other systems right out of the box, just like an OEM part from the dealer, but without the extra programming fee or trip.