Restore Peak Transmission Performance in Your 2008-2012 Chevy Colorado
If your Chevrolet Colorado or GMC Canyon is suffering from erratic shifting, getting stuck in gear, or throwing transmission codes, a failing Transmission Control Module (TCM) is the most likely culprit. As the electronic brain of your automatic transmission, the TCM is responsible for every gear change. When it fails, it can make your reliable truck feel unpredictable and unsafe. This direct-fit T42 TCM, part number 24255280, is the definitive solution, arriving pre-programmed to your truck’s specific VIN for a true plug-and-play repair.
Case Study: A Tricky Diagnosis
A customer brought in a 2011 Colorado complaining of intermittent harsh downshifts, but only after driving for 30+ minutes on a hot day. No codes were stored. In my shop, we see this often. The TCM on these trucks is located in the engine bay (RH rear compartment) where it gets heat-soaked. Over time, heat cycles cause internal solder joints to fail, but only when the module gets hot. We swapped in one of our VIN-programmed modules, and the problem was solved instantly. This isn’t just a part replacement; it’s a permanent fix for a known design vulnerability.
Is Your Colorado Transmission Acting Up?
A faulty TCM can manifest in several ways, often getting worse over time. If you’re noticing any of the following, it’s time to diagnose the module:
- ✔ Harsh, banging shifts or delayed gear engagement.
- ✔ The vehicle feels stuck in one gear (often called “limp mode”).
- ✔ An illuminated Check Engine Light or Transmission Warning Light with codes like P0700 (Transmission Control System Malfunction), P0750-P0758 (Shift Solenoid Errors), or other transmission-related DTCs.
- ✔ Inability to shift into higher gears, leading to poor fuel economy.
- ✔ A complete loss of communication with the module, preventing the vehicle from starting or shifting out of Park.
A Straightforward Guide to Installation
One of the best features of this module is its simple, DIY-friendly installation. Because we program it to your VIN before shipping, you can skip the expensive trip to the dealership for programming. This is a job you can confidently tackle in your own driveway.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts and to help clear any adaptive memory.
- Locate the Module: On the 2008-2012 Colorado, Canyon, and Hummer H3, the TCM is located in the engine compartment on the right-hand (passenger) side, near the rear of the engine.
- Disconnect and Remove: Carefully unplug the electrical connectors. Press the release tabs firmly to avoid breaking them. Then, unbolt the old module from its mounting bracket.
- Install the New TCM: Bolt the new module 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 vehicle and allow it to idle for a few minutes. It’s a good practice to use a basic OBD2 scanner to clear any lingering fault codes from the ECU’s memory.
Verified Vehicle Compatibility
This module is a guaranteed fit for the following vehicles and is a direct replacement for multiple part numbers including 24234503, 24252114, and 24255280. While it fits a wide range of GM vehicles, it is the specified part for:
- ✔ Chevrolet Colorado 2008, 2009, 2010, 2011, 2012 (RH rear engine compartment)
- ✔ GMC Canyon 2008, 2009, 2010, 2011, 2012 (RH rear engine compartment)
- ✔ Hummer H3 2008, 2009, 2010 (RH rear engine compartment)
This part is also compatible with many other GM cars, trucks, and SUVs from 2006-2014. Please verify your part number or contact us with your VIN to ensure perfect fitment.
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
No. We handle all the programming for you. Simply provide your vehicle’s VIN during checkout, and the module will arrive ready for immediate installation. This saves you hundreds of dollars in dealership fees.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module or recycle it at your convenience without the hassle of shipping it back.
What tools do I need to install this 2008-2012 Colorado TCM?
Installation is simple and requires only basic hand tools, typically a socket set to remove the mounting bolts and a flathead screwdriver to help release the connector tabs if they are stubborn.
What’s the difference between a TCM and a PCM/ECU?
The Engine Control Module (ECM) or Powertrain Control Module (PCM) manages the engine’s functions. The Transmission Control Module (TCM) specifically manages the automatic transmission. In many GM vehicles like the Colorado, they are separate units. This part controls only the transmission.
Does this part come with a warranty?
Yes, this module is backed by our comprehensive one-year warranty, giving you peace of mind and confidence in your repair.