Restore Crisp, Reliable Shifting to Your Chevrolet Monte Carlo
Is your 2006-2007 Chevrolet Monte Carlo suffering from erratic shifting, getting stuck in gear, or throwing transmission codes? You’re not just dealing with an annoyance; you’re facing a classic symptom of a failing Transmission Control Module (TCM). As a technician with over two decades of experience, I’ve seen firsthand how a faulty TCM can sideline an otherwise great car. This VIN-programmed T42 TCM, part number 24235753, is the definitive solution to restore your vehicle’s performance and your confidence on the road.
The TCM is the electronic brain of your automatic transmission. It processes data from various sensors to command precise gear changes and torque converter operation. When it fails, communication breaks down, leading to the frustrating and sometimes unsafe driving conditions you’re likely experiencing. Our module arrives pre-programmed with your vehicle’s specific VIN and the latest GM software, eliminating the need for expensive dealership visits. It’s a true plug-and-play fix designed for both professional installers and determined DIYers.
A Technician’s Notebook: The Intermittent Monte Carlo
I remember a 2007 Monte Carlo that came into my shop with a maddeningly intermittent problem. The owner complained of sudden, harsh downshifts and occasional failure to shift out of 2nd gear, but only after driving for 20-30 minutes. Of course, the check engine light would come and go. We checked the fluid, scanned for codes (P0700 was stored), and tested the solenoids, which all checked out fine. The culprit? The original TCM was failing under heat. Once the engine bay warmed up, internal circuits would break down. We installed one of these VIN-programmed T42 modules, and the problem vanished instantly. It’s a common failure point, and this part is the reliable fix.
Is Your Monte Carlo Showing These Transmission Faults?
- âś” Abrupt, harsh, or delayed gear shifts that disrupt your drive.
- âś” Vehicle is stuck in “limp mode,” often refusing to shift past 2nd or 3rd gear.
- âś” The Check Engine Light or a transmission warning light is illuminated on your dash.
- âś” Diagnostic Trouble Codes (DTCs) are present, such as P0700 (Transmission Control System Malfunction) or various solenoid codes (e.g., P0751, P0756).
- âś” A noticeable decrease in fuel economy due to inefficient shifting.
- âś” Complete loss of communication with the transmission module.
A Straightforward Guide to Installation
Installing your 2006-2007 Monte Carlo TCM is a simple process that can be completed in your own garage. For the Monte Carlo, you’ll typically find the module located under the lower air cleaner housing, making it accessible with basic hand tools.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and reset the system.
- Locate the Module: Find the original TCM, which is situated beneath the air cleaner assembly on your Monte Carlo.
- Disconnect and Remove: Carefully unplug the electrical connectors. Be gentle with the locking tabs. Then, unbolt the module from its mounting bracket.
- Install the New Module: Mount the new, pre-programmed TCM in place and securely reconnect the electrical harnesses. You should hear a click as they lock in.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s good practice to use a basic OBD2 scan tool to clear any old fault codes from the vehicle’s memory. Start the car and enjoy smooth shifting!
Verified Vehicle Compatibility
This module is a direct replacement for part number 24235753 and is interchangeable with many other GM service numbers. While this page focuses on the 2006-2007 Monte Carlo TCM, it also fits a wide range of GM vehicles. Please verify your part number or consult the list below.
- CHEVROLET MONTE CARLO (2006-2007): Transmission; (lower air cleaner housing)
- CHEVROLET IMPALA (2006-2011): Transmission; (lower air cleaner housing)
- BUICK ALLURE / LACROSSE (2006-2009): Transmission; (lower air cleaner housing)
- PONTIAC GRAND PRIX (2006-2008): Transmission; (lower air cleaner housing)
- CHEVROLET COBALT / PONTIAC G5 / SATURN ION (2006-2010): Transmission; (LH strut tower)
- GMC SIERRA & CHEVROLET SILVERADO (2007-2013): Transmission; (next to battery)
- GMC YUKON & CHEVROLET TAHOE (2007-2009): Transmission; (next to battery)
- And many more GM models from 2006-2014.
Frequently Asked Questions
Do I need to take my car to the dealer for programming?
No. This 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.
What is a T42 TCM?
The T42 is the hardware designation for a generation of Transmission Control Modules used by General Motors in many of its 4-speed automatic transmissions, like the 4L60E and 4L65E, during the mid-2000s and 2010s.
Is this a difficult part to install myself?
For most DIYers with basic mechanical skills, this is a straightforward job. On the 2006-2007 Monte Carlo, it’s located under the air filter box and requires only common hand tools. The entire process typically takes less than an hour.
Do you require my old part back (core charge)?
No, there is absolutely no core charge. You can keep your old part or dispose of it at your convenience without any extra hassle or fees.
What if my part number is slightly different?
This module is a direct replacement for many part numbers, including 24242391, 24234503, and 24252114. If you are unsure, please contact us with your VIN and we will verify compatibility for you.