End Frustrating Transmission Problems in Your Chevrolet Impala
Is your 2006-2011 Chevrolet Impala suffering from harsh shifts, getting stuck in gear, or throwing transmission-related check engine lights? You’re not just dealing with an annoyance; you’re facing the classic signs of a failing Transmission Control Module (TCM). As the electronic brain of your automatic transmission, a faulty TCM can disrupt your daily drive and, if ignored, lead to more significant mechanical issues. This VIN-programmed T42 TCM is the definitive, hassle-free solution to restore your vehicle’s performance and reliability.
This isn’t just a replacement part; it’s a direct fix that arrives ready for installation. We pre-program the module to your car’s specific Vehicle Identification Number (VIN), which means you can skip the expensive and time-consuming trip to the dealership for programming. For professional mechanics and DIY enthusiasts alike, this means a faster, more efficient repair that gets your Impala back on the road with the smooth, predictable shifting you expect.
Case Study: A Tricky Diagnosis
I remember a 2009 Impala that came into my shop with a very frustrating problem. The owner said it would shift perfectly for days, then suddenly start banging into gear and get stuck in 3rd (limp mode). The check engine light was on, and a quick scan showed the generic P0700 ‘Transmission Control System Malfunction’ code. After checking the fluid and wiring, my experience pointed directly to the TCM. These modules, especially the T42 generation, can develop internal electronic faults from heat and vibration over time, causing intermittent communication failures. We swapped in a VIN-programmed module, and the problem was solved instantly. It’s a repair I’ve done hundreds of times on these GM platforms.
Is Your Impala Showing These Telltale Signs?
A failing TCM will give you clear warnings. If you’re experiencing any of the following, it’s time to consider a replacement:
- ✔ Harsh, slamming, or erratic gear shifts.
- ✔ The vehicle is stuck in one gear (often called ‘limp mode’).
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, or other solenoid-specific codes.
- ✔ Poor fuel economy and a feeling of lost power.
- ✔ Complete failure to shift gears.
DIY-Friendly Installation: Get Back on the Road in Under 30 Minutes
Replacing the 2006-2011 Impala TCM is a straightforward job that doesn’t require specialized tools. In most Impalas and similar GM sedans, the module is easily accessible in the engine bay.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electronic repair.
- Locate the Module: On the Impala, the TCM is typically found under the lower air cleaner housing.
- 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 Module: Mount the new, pre-programmed TCM and secure it with the bolts. Reconnect the electrical harnesses, ensuring they click securely into place.
- Final Steps: Reconnect the battery terminal. While our programming handles the critical setup, it’s good practice to use a basic OBD2 scanner to clear any stored fault codes from the vehicle’s memory.
Confirmed Fitment Across a Wide Range of GM Vehicles
While this is the perfect solution for your 2006-2011 Impala TCM, this versatile T42 module also fits a huge variety of other General Motors cars, trucks, and SUVs. It is a direct replacement for multiple part numbers, including 24241806, 24252114, 24234503, and more. Key compatible models include:
- ✔ Chevrolet Impala (2006-2011)
- ✔ Chevrolet Monte Carlo (2006-2007)
- ✔ Chevrolet Cobalt & HHR (2006-2011)
- ✔ Buick LaCrosse & Allure (2006-2009)
- ✔ Pontiac G6 & Grand Prix (2006-2010)
- ✔ Saturn Aura & Ion (2006-2009)
- ✔ And many more GM vehicles from 2006-2014. Please verify your specific model in the fitment list.
Do I need to take my car to the dealer after installing this TCM?
Do I need to take my car to the dealer after installing this TCM?
No. This Transmission Control Module is delivered fully programmed to your vehicle’s VIN. This plug-and-play solution eliminates the need for any additional programming or setup at a dealership, saving you time and money.
What is the main cause of TCM failure in these cars?
The most common causes are heat cycles and engine vibrations over many years of service. These factors can lead to internal solder joint fractures or component failure on the circuit board, causing the intermittent and erratic behavior you’re experiencing.
Will this fix a P0700 check engine light code?
Yes, in most cases. The P0700 code is a general fault code indicating the TCM has detected a problem and requested the check engine light. If the root cause is the TCM itself, replacing it will resolve the code once the system is cleared.
Is there a core charge for this part?
No, we do not require a core charge. You can keep your old part, eliminating the hassle and expense of shipping it back.