Is your 2008-2012 Chevrolet Colorado struggling with harsh shifting, getting stuck in gear, or throwing transmission-related codes? A faulty Transmission Control Module (TCM) is one of the most common culprits behind these frustrating and often unpredictable issues. As the electronic brain of your automatic transmission, the TCM’s health is critical for smooth operation, fuel efficiency, and overall vehicle reliability. This direct-replacement T42 TCM, part number 24235754, is the definitive solution to restore your truck’s performance and your peace of mind.
A Technician’s Notebook: The Intermittent Limp Mode Case
I had a 2011 Colorado in the shop that was a real head-scratcher for the owner. It would drive perfectly for days, then suddenly drop into ‘limp mode’ (stuck in 3rd gear) with a P0700 code. He’d already replaced a couple of solenoids with no luck. After connecting my scan tool, I noticed the data stream from the TCM would drop out intermittently when the engine bay got hot. This is a classic sign of internal TCM failure. Instead of a costly and uncertain repair at the dealership, we installed one of our VIN-programmed modules. The entire job took less than 20 minutes, and the truck has been shifting perfectly ever since. It’s a textbook example of how a failing module can mimic mechanical problems.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the guesswork and extra cost out of the equation by pre-programming the module to your truck’s specific Vehicle Identification Number (VIN). This crucial step ensures the module communicates flawlessly with your vehicle’s other systems, like the Engine Control Module (ECM), right out of the box. You get optimal shift points and torque converter lockup strategy without paying for expensive dealership programming.
Is Your Colorado Exhibiting These Telltale Signs?
- ✔️ Harsh, delayed, or erratic gear shifts that make driving uncomfortable.
- ✔️ The vehicle suddenly enters ‘limp mode,’ refusing to shift out of a single gear.
- ✔️ Check Engine Light or Transmission Warning Light is illuminated on the dash.
- ✔️ Diagnostic Trouble Codes (DTCs) are present, such as the general P0700 or specific solenoid codes (e.g., P0751, P0756).
- ✔️ A noticeable drop in fuel economy due to inefficient shifting.
- ✔️ Complete loss of communication with the transmission module.
DIY-Friendly Installation: Get Your Truck Shifting Smoothly in Under 30 Minutes
One of the best features of this module is its simple, straightforward installation. You don’t need a vehicle lift or specialized transmission tools. For the 2008-2012 Colorado, the TCM is conveniently located in the engine bay.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts and to help reset the vehicle’s electronic systems.
- Locate the Module: On your Colorado, the TCM is found in the right-hand rear of the engine compartment. It’s a silver box with electrical connectors.
- Disconnect and Remove: Carefully unplug the electrical harnesses from the old TCM. Then, unbolt the module from its mounting bracket and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed TCM onto the bracket and securely plug in the electrical connectors. Ensure they click into place.
- Final Steps: Reconnect the negative battery terminal. While the module is plug-and-play, it’s best practice to use a basic OBD2 scan tool to clear any stored fault codes from the system’s memory. Start the truck and enjoy smooth, responsive shifting.
Verified Fitment for Your GM Vehicle
This T42 Transmission Control Module is a direct replacement for part number 24235754 and is interchangeable with many other service numbers. While it is guaranteed to fit the specified models below, this listing is specifically for the 2008-2012 Chevrolet Colorado. It also fits a wide range of other GM vehicles, including:
- Chevrolet Colorado (2008-2012)
- GMC Canyon (2008-2012)
- Hummer H3 (2008-2010)
- Chevrolet Silverado & GMC Sierra (Various Years)
- Chevrolet Tahoe & GMC Yukon (Various Years)
- And many more GM cars, trucks, and SUVs from 2006-2014.
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean for me?
It means we load your vehicle’s unique VIN into the module before shipping. This ensures it works perfectly with your truck’s specific configuration (engine, axle ratio, tire size) for optimal performance right out of the box, saving you a trip to the dealer for expensive programming.
Do I need any special tools for installation?
No. Basic hand tools like a socket set are all you need to unbolt the old module and install the new one. The most helpful tool to have is a basic OBD2 scanner to clear any old codes after installation, but it is not always required.
Will this fix a P0700 transmission code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause (like a faulty TCM itself), it’s always wise to check for other codes that might point to specific solenoids or sensors. However, a faulty TCM is a very common reason for a P0700 code.
Is there a core charge?
No, there is absolutely no core charge. You can keep your old part, so you don’t have to worry about the cost or hassle of shipping it back.
What kind of warranty is included?
This module comes with a one-year, hassle-free warranty, giving you confidence and peace of mind in your repair.