Is Your 2006-2011 Impala Shifting Erratically?
There’s nothing more frustrating than when your dependable Chevy Impala starts acting up. You press the gas, and instead of a smooth gear change, you get a harsh bang. Or worse, it feels like it’s stuck in one gear, the engine revs high, and the check engine light glares at you from the dash. These are classic signs that the brain of your transmissionโthe Transmission Control Module (TCM)โis failing. Over my 20+ years in the shop, I’ve seen this exact scenario play out hundreds of times on GM vehicles. The internal electronics of the T42 module can degrade from heat and vibration, leading to a host of transmission headaches.
From the Shop Floor: “A customer’s 2009 Impala came in last week with these exact symptomsโit wouldn’t shift out of 3rd gear, and the dash was lit up with a P0700 code. He was worried he needed a full transmission rebuild. We scanned it and found a classic TCM communication failure. Instead of a $3,000+ repair, we installed one of our pre-programmed T42 modules. In under an hour, the car was shifting perfectly, all codes were cleared, and the customer was back on the road for a fraction of the cost.”
Symptoms of a Failing Impala TCM
If your vehicle is experiencing any of the following, a faulty TCM is the likely culprit. This 2006-2011 Impala Transmission Module is designed to solve these problems directly:
- โ Harsh, delayed, or unpredictable gear shifts.
- โ Vehicle stuck in “limp mode” (usually 2nd or 3rd gear).
- โ Check Engine Light or Transmission Warning Light is on.
- โ Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-specific codes.
- โ A sudden drop in fuel economy.
- โ Complete loss of communication with the transmission.
Plug-and-Play Installation: No Dealer Visit Required
One of the biggest advantages of this module is that it arrives at your door pre-programmed to your Impala’s specific Vehicle Identification Number (VIN). This means you can skip the expensive trip to the dealership for programming. The installation is straightforward for a DIYer with basic tools.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and to help reset the system.
- Locate the TCM: On the 2006-2011 Impala, the TCM is conveniently located under the lower air cleaner housing in the engine bay. You will need to remove the airbox assembly to access it.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new TCM into place and securely reconnect the electrical harnesses. You should hear a ‘click’ as they lock in.
- Final Steps: Reinstall the air cleaner housing and reconnect the battery terminal. Start the vehicle and allow it to idle for a few minutes. While not always necessary, using a basic scan tool to clear any stored fault codes is good practice.
Quality and Compatibility You Can Trust
This is a direct-replacement T42 TCM, part number 24235753, built to meet or exceed original equipment specifications. It’s the definitive solution for your 2006-2011 Impala Transmission Module needs and is also interchangeable with a wide range of other GM part numbers, including 24252114, 24234503, 24242391, and more. Restore the smooth, reliable performance your Impala was built for and get back on the road with confidence. No core charge means you don’t have to worry about sending the old part back. Order yours today!