Is your 2008-2012 Chevrolet Colorado or GMC Canyon suffering from frustrating and unpredictable transmission behavior? If you’re dealing with harsh shifts, a check engine light that won’t go away, or your truck being stuck in limp mode, a failing Transmission Control Module (TCM) is the most likely culprit. This isn’t just an annoyance; it affects your truck’s reliability and safety. Put an end to the guesswork with our OEM-quality T42 TCM, pre-programmed to your vehicle’s specific VIN for a true plug-and-play solution.
As a technician with over two decades of experience, I’ve seen countless GM trucks come into the shop with transmission issues that seemed complex. More often than not, the root cause wasn’t a costly internal transmission failure but a faulty TCM. This module is the electronic brain of your automatic transmission, controlling everything from shift points to torque converter lockup. When it fails, the symptoms can mimic a bad transmission, leading to incorrect and expensive diagnoses. Our VIN-programmed 2008-2012 Colorado TCM eliminates the need for a trip to the dealership, saving you time and hundreds of dollars in programming fees.
A Technician’s Notebook
I remember a 2011 Colorado that came in with a P0752 code (Shift Solenoid A Stuck On). The owner had already replaced the solenoid twice with no luck. The transmission would slam into gear and refuse to shift past 2nd. After a quick data stream check, I noticed the TCM was commanding the solenoid on constantly, even when it shouldn’t have been. The problem wasn’t the solenoid at all—it was a shorted driver inside the original TCM. We installed one of our VIN-programmed modules, cleared the codes, and the truck shifted perfectly. It’s a classic case where replacing the brain fixed the problem, not the limb.
Is Your Colorado Showing These Telltale Signs?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, it’s time to consider a replacement:
- âś” Harsh, erratic, or delayed gear shifts that make driving unpleasant.
- âś” The vehicle is stuck in a single gear (often called “limp mode”) to protect the transmission.
- âś” An illuminated Check Engine Light or Transmission Warning Light.
- âś” Diagnostic Trouble Codes (DTCs) stored in the system, such as P0700 (Transmission Control System Malfunction) or various solenoid-specific codes (P0750-P0774).
- âś” Poor acceleration and a noticeable drop in fuel economy.
- âś” The transmission feels like it’s slipping between gears or failing to engage properly.
A Straightforward Guide to Your TCM Replacement
One of the best features of this part is its simple installation. You don’t need to be a master mechanic to get your truck back on the road. For the 2008-2012 Colorado and Canyon, the TCM is conveniently located in the engine bay.
- Safety First: Always disconnect the negative terminal from your truck’s battery to prevent any electrical shorts and to help reset the vehicle’s adaptive memory.
- Locate the Module: On your Colorado or Canyon, you’ll find the TCM mounted on the right-hand (passenger side) rear of the engine compartment.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs, so be gentle. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Bolt the new, pre-programmed module into place and securely reconnect the electrical harnesses. You’ll hear a click when they are properly seated.
- Final Steps: Reconnect the battery terminal. While our programming handles the critical setup, it’s always a good practice to use a basic OBD2 scan tool to clear any lingering fault codes from the system’s memory.
Verified Vehicle Compatibility
This module is a direct-fit replacement for the following vehicles. It is interchangeable with part numbers 24243901, 24240400, 24239224, and others.
- Chevrolet Colorado (2008-2012) – Located at the RH rear of the engine compartment.
- GMC Canyon (2008-2012) – Located at the RH rear of the engine compartment.
- Hummer H3 (2008-2010) – Located at the RH rear of the engine compartment.
- This T42 module also fits a wide range of other GM vehicles from 2006-2014. Please verify your part number or contact us to ensure perfect fitment.
Do I need to get this TCM programmed by a dealer?
Do I need to get this TCM programmed by a dealer?
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, saving you time and money.
Is this a difficult part for a DIYer to install?
Not at all. The installation is very straightforward, typically taking less than 30 minutes with basic hand tools. Its location in the engine bay is easy to access on the Colorado and Canyon.
Will this fix a P0700 trouble code?
Yes, in many cases. The P0700 code is a general fault code indicating the TCM has detected a problem. If the TCM itself is the source of the failure, replacing it with our pre-programmed unit will resolve the code and the underlying issue.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old part or recycle it locally without the hassle of shipping it back to us.
What kind of warranty is included?
This module is backed by our one-year, hassle-free warranty, giving you confidence and peace of mind in your repair.