If your 2006-2007 Chevrolet Monte Carlo is suffering from unpredictable shifting, getting stuck in gear, or throwing transmission codes, you’re not alone. After 20+ years in the garage, I’ve seen countless GM vehicles sidelined by a failing Transmission Control Module (TCM). The TCM is the brain of your automatic transmission, and when it falters, it can cause a cascade of frustrating and potentially damaging issues. This VIN-programmed T42 TCM, part number 24252114, is the definitive, reliable fix that gets your car driving smoothly again without a mandatory trip to the dealership.
We take the guesswork and extra cost out of the repair. Simply provide your vehicle’s VIN during checkout, and our technicians will program this module with the latest GM software specific to your Monte Carlo. This means it arrives ready for a true plug-and-play installation, restoring communication between the engine and transmission for precise gear changes, correct torque converter lockup, and improved fuel economy. Don’t let a faulty module dictate your driving experience; take control back with a part designed for lasting performance.
Is Your Monte Carlo Exhibiting These Telltale Signs?
- ✔️ Harsh, slamming shifts or delayed gear engagement.
- ✔️ The vehicle is stuck in “limp mode,” often in 2nd or 3rd gear.
- ✔️ Check Engine Light or Transmission Warning Light is on with codes like P0700, P0750, or other solenoid-related DTCs.
- ✔️ Inability to upshift or downshift properly, leading to poor acceleration.
- ✔️ A noticeable drop in fuel efficiency or signs of the transmission overheating.
- ✔️ Intermittent loss of communication with the transmission.
Case Study: A Tricky Diagnosis
A customer brought in a 2006 Monte Carlo with classic symptoms: intermittent harsh 1-2 shifts and a P0752 (Shift Solenoid ‘A’ Stuck On) code. Another shop had already replaced the solenoid pack, but the problem returned within a week. From experience, I know that while solenoids can fail, the T42 TCM is often the root cause, sending faulty signals. We installed one of our VIN-programmed TCMs, and the problem was solved instantly. The module’s internal logic had failed, not the mechanical part. This saved the customer from a costly, unnecessary transmission teardown.
Your Step-by-Step Installation Guide
Installing your new 2006-2007 Monte Carlo TCM is a straightforward job that most DIYers can complete in under 30 minutes. For the Monte Carlo, you’ll typically find the module located under the lower air cleaner housing.
- 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: Access the area beneath the air cleaner box in the engine bay to find the old module.
- Disconnect and Remove: Carefully unplug the electrical connectors. Press the release tabs firmly. Then, unbolt the module from its mounting bracket.
- Install the New Module: Mount the new, pre-programmed TCM in the same position and securely fasten the bolts. Reconnect the electrical harnesses, ensuring they click into place.
- Final Steps: Reconnect the battery terminal. While our programming resolves most issues, it’s good practice to use a basic scan tool to clear any stored diagnostic trouble codes (DTCs) from the vehicle’s memory. Start the car and enjoy the restored performance.
Verified Vehicle Compatibility List
This T42 TCM is a direct replacement for a wide range of General Motors vehicles, ensuring OEM-level function across many platforms. While perfect for your Monte Carlo, it also fits:
- ✔️ Chevrolet: Monte Carlo (06-07), Impala (06-11), Silverado, Tahoe, Suburban, Express, Cobalt, HHR, Avalanche, Colorado
- ✔️ GMC: Sierra, Yukon, Savana, Canyon, Envoy
- ✔️ Buick: LaCrosse (06-09), Allure (06-09), Lucerne (06-11), Rainier, Rendezvous
- ✔️ Pontiac: G6 (06-10), Grand Prix (06-08), Pursuit
- ✔️ Cadillac: DTS (06-11)
- ✔️ Saturn: Vue, Aura, Ion
- ✔️ Hummer: H3 (08-10)
- ✔️ Saab: 9-7X (06-09)
This module interchanges with part numbers: 24252114, 24234503, 24230461, 24234274, 24235340, 24235754, and more.
Do I need to take my car to the dealer after installation?
Do I need to take my car to the dealer after installation?
No. This module is delivered fully programmed to your vehicle’s VIN. It is a plug-and-play solution that does not require any additional programming or flashing from a dealership, saving you time and money.
What is the warranty on this TCM?
This transmission control module comes with a one-year, hassle-free warranty, giving you confidence and peace of mind in your repair.
Is there a core charge for my old part?
No, we do not require a core return. You can keep or dispose of your old module without the hassle of shipping it back, making the process simpler for you.
Will this fix a P0700 trouble code?
A P0700 code is a general fault request from the TCM to the main engine computer (ECM) to turn on the check engine light. While the P0700 itself is informational, a failing TCM is a very common cause of the underlying specific transmission codes that trigger it. Replacing the TCM often resolves the entire chain of codes.