Restore Your Impala’s Smooth, Reliable Performance
Is your 2006-2011 Chevrolet Impala suffering from frustrating transmission problems like harsh shifting, getting stuck in gear, or an illuminated Check Engine Light? Don’t let a faulty Transmission Control Module (TCM) sideline your car. As the electronic brain of your automatic transmission, a failing TCM can cause a host of issues that mimic a major mechanical failure. This direct-replacement T42 TCM, part number YNXS, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play fix.
From the Diagnostic Bay: A Common Impala Scenario
I recently had a 2009 Impala in the shop that was giving its owner headaches. The car would shift perfectly fine when cold, but after 20 minutes of driving, it would slam into gear and occasionally get stuck in 3rd (limp mode). The owner had already replaced a shift solenoid with no luck. After hooking up my scanner, I saw intermittent communication loss with the TCM and a P0700 code. This is a classic symptom. The internal electronics of the original module were failing under heat. We installed one of our VIN-programmed TCMs, and the car was shifting like new in under an hour. This simple swap saved the customer from a costly and unnecessary transmission rebuild.
Is Your Impala Showing These Telltale Signs?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, a faulty module is the likely culprit. Over my 20+ years, these are the most common symptoms I’ve seen tied directly to a bad 2006-2011 Impala TCM.
- ✔ Unpredictable, harsh, or delayed gear shifts.
- ✔ The vehicle suddenly enters “limp mode,” refusing to shift out of 2nd or 3rd gear.
- ✔ Check Engine Light or Transmission Warning Light is on, with Diagnostic Trouble Codes (DTCs) such as P0700, P0750, P0753, or other solenoid-related faults.
- ✔ Complete failure to upshift or downshift, leading to poor acceleration and performance.
- ✔ A noticeable drop in fuel economy as the transmission operates inefficiently.
- ✔ The shifter indicator on the dashboard may not display the correct gear.
DIY-Friendly Installation in Under 30 Minutes
One of the best features of this module is that it’s designed for a straightforward installation, saving you hundreds in labor costs. For the 2006-2011 Impala, the TCM is conveniently located. No complex wiring or special tools are needed.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and to help reset the system.
- Locate the Module: On your Impala, the TCM is typically found bolted to the lower air cleaner housing in the engine bay. It’s a silver box with electrical connectors.
- Disconnect and Remove: Carefully unplug the electrical connectors. Note the tab locations to avoid breaking them. Then, unbolt the old module from its mounting bracket.
- Install the New TCM: Bolt the new, pre-programmed module into place. Securely reconnect the electrical harnesses—you should hear a click as they lock in.
- Final Steps: Reconnect the battery terminal. Start the vehicle and allow it to idle for a few minutes. While the module is plug-and-play, it’s always good practice to use a basic OBD-II scanner to clear any stored fault codes from the previous issue.
Verified Fitment for Your Vehicle
This module is a guaranteed fit for your sedan and is engineered to restore factory performance. It is also compatible with a wide range of other GM vehicles, making it a versatile and reliable part for professional shops and DIYers alike.
- Chevrolet Impala: 2006, 2007, 2008, 2009, 2010, 2011 (located at lower air cleaner housing)
- This part also interchanges with numbers like 24252114, 24234503, 24230461, and YNXS across many GM models including the Monte Carlo, LaCrosse, Grand Prix, and more.
Frequently Asked Questions
Do I need to take my car to the dealer for programming?
No. This is the biggest benefit. We program the module to your car’s exact VIN before shipping it. This means it’s ready for installation right out of the box, with no additional programming or expensive dealer visits required.
Is this a difficult part to install myself?
Not at all. For a 2006-2011 Impala, this is one of the easier electronic components to replace. It’s located in an accessible spot in the engine bay and requires only basic hand tools. Most DIYers can complete the job in under 30 minutes.
What is a core charge? Do I need to send my old part back?
There is absolutely no core charge for this part. You can keep your old module or dispose of it without any obligation to send it back to us, simplifying your repair process.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault request, meaning the TCM has detected a problem and asked the main engine computer (ECM) to turn on the Check Engine Light. Often, a failing TCM is the root cause of the P0700 and other related codes. Replacing a faulty module will resolve these codes.
What information do you need to program the module?
All we need is your vehicle’s 17-digit Vehicle Identification Number (VIN). You can typically find this on your driver’s side dashboard (visible through the windshield), on the driver’s door jamb sticker, or on your vehicle’s registration and insurance documents.