Restore Smooth Shifting to Your 2006-2011 Chevrolet Impala
Is your Chevrolet Impala suffering from harsh, erratic shifting, getting stuck in gear, or throwing transmission-related codes? As a technician with over two decades of experience, I’ve seen these symptoms countless times, and they almost always point to a failing Transmission Control Module (TCM). This replacement T42 TCM, part number 24230461, is the definitive solution to get your vehicle driving like new again. It arrives expertly pre-programmed to your vehicle’s specific VIN, eliminating the need for expensive dealership visits and ensuring a true plug-and-play repair.
Case Study: The Intermittent Impala
A customer brought in a 2009 Impala with a complaint that stumped two other shops: it would randomly refuse to shift out of 2nd gear, but only after driving for 30-40 minutes on a hot day. No hard codes were stored, just a generic P0700. After checking the basics, I suspected the TCM. On these Impalas, the TCM is mounted under the air cleaner housing, where it gets baked by engine heat. This heat soak causes internal solder joints to fail intermittently. We installed one of our VIN-programmed modules, and the problem was solved instantly. This isn’t just a part; it’s a permanent fix for a common design flaw.
Is Your Impala Showing These Telltale Symptoms?
A failing TCM can manifest in several ways, often starting as a minor annoyance before becoming a major drivability issue. If you’re experiencing any of the following, a faulty module is the likely culprit. A new 2006-2011 Impala TCM is the most reliable fix.
- âś” Harsh, slamming shifts or sudden lurching between gears.
- âś” Delayed engagement when shifting from Park to Drive or Reverse.
- âś” Vehicle is stuck in “limp mode,” usually in 2nd or 3rd gear.
- âś” The Check Engine Light is on with Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-specific codes.
- âś” Complete failure to upshift or downshift, leading to poor acceleration and terrible fuel economy.
- âś” Inconsistent communication with the scan tool or other modules.
A Straightforward Guide to Your Impala TCM Installation
One of the best features of this module is how simple it is for a DIYer to install. No specialized tools are needed, and you can have the job done in your driveway in less than 30 minutes. For the 2006-2011 Impala, you’ll find the TCM located directly under the air cleaner housing.
- Safety First: Always begin by disconnecting the negative terminal on your vehicle’s battery to prevent any electrical shorts and help reset the system.
- Access the Module: Remove the engine cover (if equipped) and the air cleaner box assembly. This will expose the TCM mounted below it.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old TCM. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Bolt the new, pre-programmed module into place and securely reconnect the electrical connectors. You’ll hear a click when they are properly seated.
- Reassemble and Finalize: Reinstall the air cleaner housing and reconnect the negative battery terminal. Use a basic OBD2 scan tool to clear any stored fault codes. Start the vehicle and enjoy your smooth-shifting transmission!
Verified Vehicle Compatibility
While this is the perfect solution for your 2006-2011 Impala TCM replacement, this versatile T42 module is also compatible with a wide range of other General Motors vehicles. Please verify your specific model and location below. This part is interchangeable with service numbers including 24252114, 24234503, 24234274, 24235340, and more.
- Chevrolet Impala (2006-2011): Transmission; (lower air cleaner housing)
- Buick Allure/LaCrosse (2006-2009): Transmission; (lower air cleaner housing)
- Chevrolet Cobalt (2006-2010): Transmission; (LH strut tower)
- Chevrolet HHR (2006-2011): Transmission; (LH engine compartment)
- Chevrolet Monte Carlo (2006-2007): Transmission; (lower air cleaner housing)
- Chevrolet Silverado/GMC Sierra (2007-2013): Transmission; (next to battery)
- Chevrolet Tahoe/GMC Yukon (2007-2009): Transmission; (next to battery)
- Pontiac G6 (2006-2010): Transmission; (LH strut tower)
- Saturn Aura (2007-2009): Transmission; (LH frame rail front)
- …and many other GM models. Please check the full fitment list for your specific vehicle.
Frequently Asked Questions
Frequently Asked Questions
Do I need to program this module?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for immediate installation, with no extra steps or dealership visits required.
Is a core charge required?
Absolutely not. You can keep your old part, so there’s no need to worry about shipping a core back to us or waiting for a refund.
What is the warranty on this part?
This TCM is backed by our one-year, hassle-free warranty, giving you confidence and peace of mind in your repair.
Will this fix a P0700 code on my Impala?
A P0700 code is a generic fault request from the TCM to the main engine computer (ECM) to turn on the check engine light. While this module often resolves the root cause (like a solenoid circuit fault), you should always diagnose the specific codes stored within the TCM itself for a complete picture.
Where is the TCM located on a 2007 Impala?
On the 2006-2011 Chevrolet Impala, the Transmission Control Module is conveniently located in the engine bay, directly underneath the air cleaner box assembly.