End Frustrating Shifting Problems in Your Monte Carlo
Is your 2006 or 2007 Chevrolet Monte Carlo suffering from erratic shifting, getting stuck in gear, or throwing transmission codes? These are classic signs of 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 unreliable. This T42 TCM, part number 24241806, is the definitive solution. It arrives expertly programmed to your car’s specific VIN, eliminating the need for expensive dealership visits. This isn’t just a part; it’s a direct fix that restores the smooth, predictable performance you expect from your vehicle.
The TCM is the brain of your automatic transmission, managing everything from shift points to torque converter lockup. When it fails, communication breaks down, leading to the issues you’re experiencing. Our process ensures this replacement module works seamlessly with your car’s systems right out of the box. By installing our VIN-programmed 2006-2007 Monte Carlo TCM, you are taking a confident step toward resolving those nagging transmission faults for good.
Case Study: A Tricky Diagnosis
A customer brought in a 2007 Monte Carlo with a complaint of harsh 1-2 shifts and occasionally getting stuck in 3rd gear (limp mode), especially after driving for 20 minutes. The check engine light was on, and my scan tool pulled a P0700 (Transmission Control System Malfunction) and a P0753 (Shift Solenoid ‘A’ Electrical). The owner had already replaced the solenoid with no change. This is a common scenario. While the code points to a solenoid, the TCM is often the root cause, failing to send the correct voltage. After confirming the wiring harness was intact, we installed a VIN-programmed T42 TCM. The difference was immediate. Shifts were crisp, limp mode was gone, and the codes never returned. This highlights why addressing the TCM is crucial for a lasting repair.
Is Your Monte Carlo Showing These Symptoms?
- âś” Harsh, slamming, or delayed gear shifts.
- âś” Vehicle is stuck in one gear (often called ‘limp mode’).
- âś” Check Engine Light or Transmission Warning Light is illuminated.
- âś” Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related faults are present.
- âś” A noticeable decrease in fuel economy.
- âś” The transmission seems to slip between gears or fails to engage properly.
- âś” Complete loss of communication with the transmission module.
A Straightforward Guide to Your TCM Installation
For the DIY enthusiast, replacing the 2006-2007 Monte Carlo TCM is a manageable job that typically takes less than an hour. The key is its location and our pre-programming, which makes it a true plug-and-play repair.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: On your 2006-2007 Monte Carlo, the TCM is found underneath the lower air cleaner housing. You will need to remove the airbox assembly to gain access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old TCM. Press the release tabs firmly to avoid damaging them. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Mount the new, VIN-programmed TCM in the same location and securely fasten it. Reconnect the electrical connectors, ensuring they click into place.
- Reassemble and Reconnect: Reinstall the air cleaner housing. Once everything is back in place, reconnect the negative battery terminal.
- Final Steps: Start the vehicle. The pre-programming means it should operate correctly immediately. We recommend using a basic scan tool to clear any stored fault codes from the ECU to finalize the repair.
Verified Vehicle Compatibility
This T42 Transmission Control Module is a direct fit for the following vehicles and configurations. Please verify your model and the noted location to ensure proper fitment.
This part will fit these makes and models with these options:
- CHEVROLET MONTE CARLO 06-07 Transmission; (lower air cleaner housing)
- CHEVROLET IMPALA 06-11 Transmission; (lower air cleaner housing)
- CHEVROLET SILVERADO 1500 PICKUP 07-13 Transmission; (next to battery)
- GMC SIERRA 1500 PICKUP 07-13 Transmission; (next to battery)
- BUICK LACROSSE / ALLURE 06-09 Transmission; (lower air cleaner housing)
- PONTIAC GRAND PRIX 06-08 Transmission; (lower air cleaner housing)
- …and many other GM vehicles from 2006-2014. Please use our vehicle selector tool to confirm.
Interchangeable with part numbers: 24252114, 24234503, 24230461, 24234274, 24235340, 24235754, 24238856, 24239224, 24241806, and more.
Frequently Asked Questions
Do I need to take my car to the dealer for programming?
No. This Transmission Control Module comes fully pre-programmed to your vehicle’s VIN. It is ready for installation right out of the box, saving you time and money on dealership programming fees.
What is a TCM and what does it do?
The TCM, or Transmission Control Module, is a computer that controls your automatic transmission. It reads data from various sensors to determine the perfect time to shift gears, control fluid pressure, and engage the torque converter, ensuring smooth and efficient operation.
Is this a difficult part to install myself?
For someone with basic mechanical skills, this is a very straightforward installation. On the 2006-2007 Monte Carlo, it’s located under the air cleaner box. The main steps are disconnecting the battery, removing the airbox, swapping the module, and reconnecting everything. No special tools are required.
Will this fix a P0700 code?
A P0700 is a general code indicating the TCM has detected a fault. While this module often resolves the root cause of a P0700, you should always diagnose any other specific codes (like solenoid or sensor codes) that accompany it. In many cases, a faulty TCM is the source of those secondary codes.
Is there a core charge for my old part?
No, there is no core charge required for this part. You can keep your old module without the hassle of returning it.