Restore Crisp, Reliable Shifting to Your Chevrolet Monte Carlo
If your 2006-2007 Chevrolet Monte Carlo is suffering from harsh shifts, delayed gear engagement, or is stuck in limp mode, the cause is very often a failing Transmission Control Module (TCM). As a technician with over two decades of experience, I’ve seen how a faulty TCM can make a great car feel unpredictable and unsafe. This T42 TCM, part number 24243901, is the definitive solution to restore your vehicle’s transmission performance and your driving confidence. It’s the brain of your automatic transmission, precisely managing shift points, torque converter lockup, and line pressure to ensure smooth operation and optimal fuel economy.
The biggest hurdle in replacing a TCM has always been the expensive and time-consuming trip to the dealership for programming. We eliminate that completely. We pre-program this module to your vehicle’s specific VIN before it ships, making it a true plug-and-play replacement. This means no special tools, no dealer appointments—just a straightforward installation that gets you back on the road fast.
A Technician’s Notebook
I remember a 2007 Impala (which uses the same T42 TCM as the Monte Carlo) that came into the shop with a classic complaint: “It shifts fine when it’s cold, but once it warms up, it bangs into gear and sometimes won’t shift past 2nd.” The owner had already replaced a shift solenoid with no luck. A scan showed a generic P0700 code. Experience pointed directly to the TCM. Heat soak was causing internal electronic components to fail intermittently. After installing a VIN-programmed module like this one, the car’s shifting was immediately smooth and predictable, hot or cold. This part saves hours of diagnostic guesswork and prevents unnecessary parts replacement.
Is Your Monte Carlo Showing These Telltale Signs?
A failing TCM doesn’t just degrade performance; it can leave you stranded. If you’re noticing any of the following, it’s a strong indicator that your module needs replacement. This is a common issue we see in the shop with the 2006-2007 Monte Carlo TCM.
- âś” Harsh, slamming gear changes or erratic, unpredictable shifting.
- âś” The vehicle is stuck in a single gear (often 2nd or 3rd), known as “limp mode.”
- âś” Check Engine Light or Transmission Warning light is illuminated on the dash.
- âś” Diagnostic Trouble Codes (DTCs) are present, such as P0700 (Transmission Control System Malfunction), P0750, or other solenoid-related codes.
- âś” Delayed engagement when shifting from Park to Drive or Reverse.
- âś” A noticeable drop in fuel efficiency or signs of the transmission overheating.
A Straightforward Guide to Installation
For the DIY enthusiast or professional mechanic, replacing the 2006-2007 Monte Carlo TCM is a simple job that typically takes less than 30 minutes. Our pre-programmed module makes it even easier.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and help reset the system.
- Locate the TCM: On your 2006-2007 Monte Carlo, the TCM is conveniently located under the lower air cleaner housing in the engine bay.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. Then, unbolt the module from its mounting bracket and remove it from the vehicle.
- Install the New Module: Bolt the new, pre-programmed TCM into place. Securely reconnect the electrical connectors, ensuring they click into place.
- Final Steps: 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 transmission codes is recommended for a clean slate.
Verified Vehicle Compatibility
This T42 TCM is a direct replacement for part number 24243901 and is interchangeable with a wide range of other service numbers. It is compatible with the following General Motors vehicles:
- Chevrolet Monte Carlo: 2006-2007 (located in lower air cleaner housing)
- Chevrolet Impala: 2006-2011 (lower air cleaner housing)
- Chevrolet Silverado, Tahoe, Suburban, Avalanche: 2007-2013 (various locations, often next to battery)
- GMC Sierra, Yukon: 2007-2013 (various locations, often next to battery)
- Pontiac G6, Grand Prix: 2006-2010 (LH strut tower or lower air cleaner housing)
- Buick LaCrosse, Lucerne, Allure: 2006-2011 (lower air cleaner housing or LH engine compartment)
- …and many other GM models including the Cobalt, HHR, Savana, Express, Canyon, Colorado, Saturn Aura, and more. Please verify your part number for a perfect match.
Frequently Asked Questions
Do I need to take my car to the dealer after installing this TCM?
No. This module comes fully programmed to your vehicle’s VIN. It is designed for direct installation without requiring any additional programming or trips to the dealership, saving you time and money.
Will this fix my P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. In many cases, a failing TCM is the root cause, and replacing it will resolve the code and the underlying issue. However, you should always ensure other transmission components are functioning correctly.
Where is the TCM located on my 2007 Monte Carlo?
On the 2006-2007 Chevrolet Monte Carlo, the Transmission Control Module is located inside the engine compartment, situated within the lower portion of the air cleaner housing assembly.
Is this a reliable part?
Absolutely. This module is built to meet or exceed original equipment standards for performance and longevity. It is backed by our one-year warranty for your peace of mind.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old part, which simplifies the process and saves you the hassle and cost of return shipping.