Restore Smooth Shifting to Your Chevrolet Colorado
If your 2008-2012 Chevrolet Colorado is suffering from erratic shifting, getting stuck in gear, or throwing transmission-related check engine lights, a failing Transmission Control Module (TCM) is the most likely culprit. As a technician with over two decades of experience, I’ve seen countless GM trucks and SUVs sidelined by this exact issue. The TCM is the electronic brain of your automatic transmission, and when it fails, it can make your reliable truck feel unpredictable and unsafe. This T42 TCM, service part number 24240449, is the definitive, hassle-free solution to restore your vehicle’s performance and peace of mind.
The biggest challenge with replacing electronic modules has always been the expensive and time-consuming programming required at a dealership. We eliminate that step entirely. By providing your vehicle’s VIN at checkout, we program the module specifically for your truck. It arrives at your door ready for a true plug-and-play installation, loaded with the latest GM software updates to ensure optimal shift points, torque converter lockup, and fuel efficiency.
Case Study: A Tricky Diagnosis
A customer brought in a 2011 Colorado with a classic complaint: it would randomly refuse to shift out of 2nd gear, and the check engine light was on. His local shop had already replaced two shift solenoids without success. A quick scan showed a P0752 (Shift Solenoid ‘A’ Stuck On) and the generic P0700 code. From experience, I know that when solenoid replacements don’t fix the issue, the fault often lies with the driver—the TCM itself. The internal circuits that control the solenoids can fail, sending false signals. We installed a VIN-programmed T42 module, cleared the codes, and the truck’s shifting problems were gone for good. This part saved the customer from a potential transmission rebuild.
Is Your Colorado Exhibiting These Transmission Problems?
A faulty TCM can manifest in several ways. If you’re noticing any of the following, it’s a strong indicator that your module needs replacement. Addressing it promptly can prevent further damage to your transmission’s mechanical components.
- ✔ Harsh, banging shifts or delayed gear engagement.
- ✔ Vehicle is stuck in “limp mode” (usually second or third gear).
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, P0752, or other solenoid-related faults.
- ✔ Failure to upshift or downshift properly as you accelerate or slow down.
- ✔ A noticeable decrease in fuel economy.
- ✔ Intermittent loss of communication with the module (seen with a scan tool).
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 2008-2012 Colorado TCM, the module 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 computer systems.
- Locate the Module: On the Colorado and Canyon, the TCM is found in the right-hand (passenger side) rear of the engine compartment. It’s a silver box with electrical connectors.
- Disconnect and Remove: Carefully unplug the wiring harness connectors. They have locking tabs that need to be released. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the wiring 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 always best practice to use a basic OBD-II scan tool to clear any stored fault codes from the system’s memory. Start the vehicle and test drive to confirm smooth operation.
Verified Vehicle Compatibility List
This T42 TCM is a direct replacement for part number 24240449 and is interchangeable with a wide range of other GM service numbers, including 24252114, 24234503, and 24240400. While this page focuses on the Chevy Colorado, it fits many other vehicles. Please confirm your model and location below:
- Chevrolet Colorado (2008-2012) – Transmission; (RH rear engine compartment)
- GMC Canyon (2008-2012) – Transmission; (RH rear engine compartment)
- Hummer H3 (2008-2010) – Transmission; (RH rear engine compartment)
- Chevrolet Silverado / GMC Sierra 1500 (2007-2013) – Transmission; (next to battery)
- Chevrolet Tahoe / GMC Yukon (2007-2009) – Transmission; (next to battery)
- Chevrolet Impala (2006-2011) – Transmission; (lower air cleaner housing)
- Chevrolet HHR (2006-2011) – Transmission; (LH engine compartment)
- Pontiac G6 (2006-2010) – Transmission; (LH strut tower)
- And many more GM models from 2006-2014. Please verify your part number for a guaranteed fit.
Frequently Asked Questions
What does VIN programming mean for me?
It means the module arrives ready to install right out of the box. We load your vehicle’s specific software onto it, so you don’t need to pay a dealership for programming. It’s a true plug-and-play solution that saves you time and money.
Do I need special tools for this installation?
No special tools are required. Basic hand tools like a socket set and a screwdriver are all that’s typically needed to access and replace the module in your Colorado.
Will this fix a P0700 trouble code?
A P0700 code is a generic fault code indicating the TCM has detected a problem. This part will often resolve the underlying issue causing the P0700, especially if it’s paired with other specific solenoid or shifting codes. After installation, you must clear the codes with a scan tool.
Is there a core charge for my old part?
No, there is no core charge. You are not required to send your old, faulty module back to us, which simplifies the repair process for you.
How do I know this is the right part for my truck?
The best way to ensure compatibility is to match the part number (24240449 or an interchangeable number) from your original module. You can also use our website’s fitment tool or contact our expert support team with your VIN.