Restore Peak Performance to Your Chevrolet Monte Carlo
Is your 2006-2007 Chevrolet Monte Carlo suffering from harsh, erratic shifting or getting stuck in gear? A failing Transmission Control Module (TCM) is one of the most common culprits behind these frustrating and potentially damaging issues. As the electronic brain of your automatic transmission, the TCM dictates every shift point and clutch engagement. When it fails, drivability plummets. This replacement T42 TCM, part number 24241806, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play repair.
A Technician’s Notebook
I remember a 2007 Monte Carlo SS that came into the shop stuck in ‘limp mode’—third gear only. The customer was worried about a complete transmission rebuild. After pulling a P0700 and a few solenoid circuit codes, my initial checks on the wiring and solenoids came back clean. Experience pointed me to the TCM. These T42 modules, especially after years of heat cycles under the hood, can develop internal faults that create bizarre, intermittent symptoms. We installed a VIN-programmed module, cleared the codes, and the car was shifting perfectly within the hour. It saved the customer thousands over a needless transmission replacement.
Is Your Monte Carlo Exhibiting These Transmission Issues?
A faulty TCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely fix you need. Over my 20 years in diagnostics, I’ve seen these symptoms point to a failing 2006-2007 Monte Carlo TCM hundreds of times.
- ✔ Abrupt, hard shifts or banging into gear.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ Vehicle is stuck in a single gear (limp mode) and won’t upshift or downshift.
- ✔ Check Engine Light or Transmission Warning Light is on with codes like P0700, P0750, or other solenoid-related DTCs.
- ✔ A noticeable drop in fuel economy.
- ✔ The transmission feels like it’s slipping between gears.
- ✔ Complete loss of communication with the transmission module.
A Straightforward Guide to Your TCM Installation
One of the best features of this part is its simple installation, which most DIYers can complete in under 30 minutes with basic hand tools. For the 2006-2007 Monte Carlo, you’ll find the TCM located under the lower air cleaner housing.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electronic component replacement.
- Access the Module: Remove the air cleaner assembly to gain clear access to the old TCM.
- Disconnect and Remove: Carefully unplug the electrical connectors from the module. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Mount the new, pre-programmed module in place and securely fasten it. Reconnect the electrical connectors, ensuring they click into place.
- Reassemble and Finalize: Reinstall the air cleaner assembly and reconnect the battery terminal. Start the vehicle and use a scan tool to clear any stored fault codes. No core charge means you can keep or discard your old part without hassle.
Verified Fitment For These GM Vehicles
This T42 TCM is a direct replacement for a wide range of General Motors cars, trucks, and SUVs. While this page is focused on the 2006-2007 Monte Carlo TCM, it is also compatible with the following models. Please verify the location noted for your specific vehicle.
- Chevrolet Monte Carlo (2006-2007): Transmission; (lower air cleaner housing)
- Chevrolet Impala (2006-2011): Transmission; (lower air cleaner housing)
- Chevrolet Silverado/GMC Sierra 1500 (2007-2013): Transmission; (next to battery)
- Chevrolet Tahoe/GMC Yukon (2007-2009): Transmission; (next to battery)
- Chevrolet Cobalt/Pontiac G5/Saturn Ion (2006-2010): Transmission; (LH strut tower)
- Buick LaCrosse/Allure (2006-2009): Transmission; (lower air cleaner housing)
- Cadillac DTS (2006-2011): Transmission; (RH front engine compartment)
- Hummer H3 (2008-2010): Transmission; (RH rear engine compartment)
- …and many other GM models listed in the original fitment data.
This module interchanges with part numbers: 24252114, 24234503, 24230461, 24234274, 24235340, 24235754, 24238856, 24239224, 24239926, 24240400, 24241806, 24243901, 24243921, 24255280, 24256960, and more.
Frequently Asked Questions
What does ‘VIN Programmed’ mean for me?
It means this module arrives ready for installation. We load your car’s Vehicle Identification Number (VIN) and the latest GM software onto the TCM before shipping. This ensures it communicates perfectly with your vehicle’s other computers, eliminating the need for an expensive trip to the dealership for programming.
Do I need any special tools to install this part?
No, basic hand tools like a socket set and screwdrivers are typically all that’s required. The most important step is disconnecting the battery before you begin. A basic OBD2 scan tool is helpful for clearing codes after installation but not always necessary.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault request from the TCM to the main engine computer (ECM) to turn on the Check Engine Light. Often, a failing TCM is the root cause. While you should always diagnose any other specific codes that are present, replacing a faulty TCM will resolve the P0700 in many cases.
Is there a warranty included with this module?
Yes, this part is backed by our comprehensive one-year warranty, giving you peace of mind and confidence in your repair.
How do I provide my VIN for programming?
During the checkout process, you will be prompted to enter your vehicle’s 17-digit VIN. Please double-check it for accuracy to ensure correct programming.