Finally, a Real Fix for Your Colorado’s Shifting Problems
If you’re dealing with a 2008-2012 Chevrolet Colorado that’s shifting harshly, getting stuck in gear, or throwing transmission codes, you know how frustrating it can be. Your truck is supposed to be dependable, but a faulty Transmission Control Module (TCM) can make it feel unpredictable and unsafe. Over my 20 years in diagnostics, I’ve seen countless GM vehicles sidelined by TCM failure. The good news is that there’s a straightforward, reliable solution that doesn’t require an expensive trip to the dealership.
This is a direct-replacement T42 TCM, service part number 24239224, that arrives at your door fully programmed to your truck’s specific Vehicle Identification Number (VIN). This isn’t just a generic part; it’s tailored to your vehicle’s software, ensuring it communicates perfectly with the Engine Control Module (ECM) and the 4L60E transmission. It manages everything from shift points and line pressure to torque converter lockup, restoring the smooth, crisp performance you expect from your Colorado.
Case Study: The Ghost in the Transmission
A customer brought in his ’11 Colorado with an intermittent issue. It would randomly refuse to shift out of 2nd gear (limp mode) and throw a generic P0700 code. He’d already replaced a shift solenoid with no luck. After connecting my scan tool, I saw erratic data from the TCM. Heat soak from the engine compartment was causing internal circuits to fail intermittently. Instead of a costly transmission teardown, we installed a VIN-programmed TCM. The problem vanished immediately. It’s a classic example of how the right electronic part can solve what seems like a major mechanical failure.
Is Your Colorado Showing These Symptoms?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution. In my shop, these are the tell-tale signs I look for:
- ✔ Harsh, delayed, or erratic gear shifts that bang into place.
- ✔ The truck is stuck in “limp mode” and won’t shift past 2nd or 3rd gear.
- ✔ Your Check Engine Light or transmission warning light is on with codes like P0700, P0750, P0753, or other solenoid-related faults.
- ✔ A sudden drop in fuel economy or a feeling of slipping between gears.
- ✔ Complete loss of communication with the transmission module (a U0101 code).
- ✔ No engagement when shifting from Park to Drive or Reverse.
A Straightforward Guide to Your 2008-2012 Colorado TCM Installation
One of the best parts about this solution is how simple it is to install. You don’t need specialized tools or a programming degree. Just basic hand tools and about 30 minutes.
- Safety First: Always disconnect the negative terminal on your truck’s battery to prevent any electrical shorts and to help reset the vehicle’s electronic systems.
- Locate the Module: On the 2008-2012 Chevy Colorado, the TCM is located in the engine bay, typically on the right-hand (passenger) side, toward the rear of the compartment.
- Disconnect and Remove: Carefully unclip the electrical connectors. Press the release tabs firmly and pull straight out—don’t wiggle them side-to-side. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Mount the new, VIN-programmed module onto the bracket and securely fasten the bolts. Re-connect the electrical harnesses, making sure they click firmly into place.
- Final Steps: Reconnect the negative battery terminal. Start the engine and let it idle for a few minutes. While the module is plug-and-play, it’s good practice to use a basic OBD2 scanner to clear any old fault codes stored in the system.
Verified Vehicle Compatibility
This T42 Transmission Control Module is a guaranteed fit for the following vehicles, among many others. It directly interchanges with part numbers 24252114, 24234503, 24239224, and more.
- 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 1500 (2007-2013) – Transmission; (next to battery)
- GMC Sierra 1500 (2007-2013) – Transmission; (next to battery)
- Chevrolet Tahoe / GMC Yukon (2007-2009) – Transmission; (next to battery)
- Chevrolet Express / GMC Savana Van (2006-2014) – Transmission; (RH engine compartment)
- And many other GM cars, trucks, and SUVs from 2006-2014. Please verify your part number.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. We handle all the programming for you before shipment. Simply provide your vehicle’s VIN during checkout, and the module will arrive ready for plug-and-play installation.
Is this a new or used part?
This is a high-quality, OEM-spec electronic component that has been expertly prepared and programmed for your vehicle. It is backed by our one-year warranty for your peace of mind.
Will this fix a P0700 trouble code?
A P0700 code is a general fault request from the TCM to the ECM to turn on the Check Engine Light. While this module often resolves the underlying issue causing the P0700, it’s important to scan for more specific codes (like P0753, etc.) to confirm the diagnosis. In a majority of cases I’ve seen, a faulty TCM is the root cause.
What if I install it and still have problems?
While this part resolves the most common transmission electronic failures, we’re here to help. Our expert support team can assist with diagnostics if your issue persists, ensuring you’re not left guessing. All our parts are covered by a hassle-free warranty.
Is there a core charge?
No, there is no core charge for this module. You can keep your old part without needing to send it back, saving you time and money on return shipping.