If your 2008-2012 Chevrolet Colorado is suffering from delayed shifts, getting stuck in gear, or throwing transmission codes, you’re not alone. As a technician with over two decades of experience, I’ve seen countless GM trucks sidelined by a faulty Transmission Control Module (TCM). The TCM is the brain of your automatic transmission, and when it fails, it can mimic a catastrophic internal failure, causing immense frustration. This VIN-programmed T42 TCM is the definitive solution, designed to restore crisp, reliable shifting and get your truck back to work without a costly trip to the dealership.
This isn’t just a replacement part; it’s a permanent fix for the communication errors and electronic glitches that plague aging modules. We program this module specifically to your truck’s Vehicle Identification Number (VIN) before it ships. This crucial step ensures it communicates flawlessly with your vehicle’s Engine Control Module (ECM) and other systems right out of the box. You get a plug-and-play repair that eliminates the need for expensive scan tools or dealership appointments for programming.
Case Study: A Tricky Diagnosis
A customer brought in his ’11 Colorado, complaining it would randomly refuse to shift out of 2nd gear—a classic limp mode symptom. He was convinced his 4L60E transmission was shot and was bracing for a multi-thousand-dollar bill. After scanning it, I found a P0752 (Shift Solenoid A Stuck On) code, but my electrical tests on the solenoid itself showed it was functioning perfectly. Experience pointed me to the TCM. Heat and vibration had caused an internal solder joint to fail, leading to an intermittent command fault. We installed a VIN-programmed TCM, cleared the codes, and the truck has been shifting perfectly ever since. It saved the customer a massive, unnecessary repair bill.
Is Your Colorado Exhibiting These Telltale Signs?
A failing TCM can cause a variety of symptoms that are often misdiagnosed. If you’re experiencing any of the following, this module is likely the solution:
- ✔ Harsh, slamming, or erratic gear shifts.
- ✔ The truck gets stuck in one gear (often 2nd or 3rd) and won’t upshift or downshift.
- ✔ Check Engine Light or Transmission Warning Light is on with codes like P0700, P0750, P0752, or other solenoid-related DTCs.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ Poor fuel economy and a feeling of sluggish performance.
- ✔ Complete loss of communication with the transmission.
Simple Installation to Get Your Colorado Shifting Smoothly
This is a repair you can confidently tackle in your own driveway. For the 2008-2012 Colorado, the TCM is located in the right-hand rear of the engine compartment, making it easily accessible.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts and help reset the vehicle’s computer systems.
- Locate the Old Module: Find the TCM on the right-hand (passenger side) rear of the engine bay.
- Disconnect and Remove: Carefully unplug the electrical connectors. Note the locking tab positions to avoid damage. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical harnesses. You should hear a click as they lock in.
- Final Steps: Reconnect the battery terminal. Start the truck and allow it to idle for a few minutes. While not always necessary, using a basic scan tool to clear any stored DTCs is a good final step.
Verified Fitment for Your Vehicle
This T42 TCM, part number 24240400, is the correct replacement for the 2008-2012 Chevrolet Colorado and 2008-2012 GMC Canyon. It is also a direct fit for a wide range of other GM vehicles. Please verify your part number or contact us with your VIN to ensure 100% compatibility. This module interchanges with several part numbers, including: 24252114, 24234503, 24230461, 24234274, 24235340, 24235754, 24238856, 24239224, 24239926, 24241806, 24243901, 24243921, 24255280, 24256960, and more.
Do I need to have this module programmed by a dealer?
Do I need to have this module programmed by a dealer?
No. This is the biggest benefit we offer. We program the module to your vehicle’s specific VIN before shipping. It arrives ready for plug-and-play installation, saving you hundreds in dealership programming fees.
Is this a new or used part?
This is a high-quality, OEM-standard replacement module that has been expertly tested and programmed. It is backed by our one-year warranty for your peace of mind.
What tools do I need for the installation?
For most applications, including the Colorado, you’ll only need basic hand tools like a socket set and a wrench to disconnect the battery. No special electronic tools are required for the installation itself.
Is there a core charge for my old part?
No, there is no core charge required for this module. You can keep your old part without any hassle or need to return it.