Is Your Colorado Shifting Erratically or Stuck in Gear?
If your 2008-2012 Chevrolet Colorado is experiencing harsh shifting, delayed gear engagement, or has the check engine light illuminated with transmission-related codes, a failing Transmission Control Module (TCM) is the likely culprit. The TCM is the electronic brain of your automatic transmission, responsible for managing shift points, torque converter lockup, and line pressure. When it fails, it can cause a host of drivability issues, from poor fuel economy to leaving you stranded in limp mode. This replacement T42 TCM is the definitive solution to restore your truck’s performance and reliability.
From the Diagnostic Bay
We had a 2010 Colorado towed in last month. The owner said it suddenly refused to shift out of 2nd gear, and the transmission warning light was on. A quick scan pulled code P0700, a generic transmission fault, along with several solenoid circuit codes. After confirming the wiring harness was intact, we diagnosed a failed TCM. Instead of a costly trip to the dealer for a new module and programming, we installed one of our VIN-programmed T42 modules. In under an hour, the truck was back on the road, shifting smoothly through all gears with all codes cleared. The customer was thrilled to have a fast, affordable, and permanent fix.
Symptoms of a Failing 2008-2012 Colorado TCM
- ✔ Harsh, slamming, or erratic gear shifts.
- ✔ Vehicle gets stuck in a single gear (limp mode), often 2nd or 3rd.
- ✔ Check Engine Light or Transmission Warning Light is on.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-specific codes are present.
- ✔ Failure to upshift or downshift correctly.
- ✔ A noticeable decrease in fuel efficiency.
- ✔ Complete loss of communication with the TCM, leading to a no-start or no-shift condition.
The Plug-and-Play Solution: VIN Programming Included
Don’t waste time and money at a dealership. This module arrives at your door pre-programmed to your truck’s specific Vehicle Identification Number (VIN). This critical step ensures seamless communication between the TCM, the Engine Control Module (ECM), and other vehicle systems. It’s loaded with the latest GM software updates to ensure optimal shift strategies and longevity. This means no additional programming is required—simply install the part, and you’re ready to go. It’s the most effective way to solve complex electronic transmission issues without specialized tools.
Built to meet or exceed original equipment standards, this module is a direct replacement for part number 24243901 and is interchangeable with a wide range of other service numbers, including 24252114, 24234503, 24230461, and more. It is specifically designed for vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E.
Easy Installation for DIYers and Professionals
For the 2008-2012 Chevrolet Colorado and its GMC Canyon counterpart, the TCM is conveniently located in the engine compartment on the right-hand rear side. The replacement process is straightforward:
- Disconnect the Battery: Always disconnect the negative battery terminal before working on vehicle electronics.
- Locate and Remove: Find the TCM at the rear RH side of the engine bay. Disconnect the electrical connectors and unbolt the module from its bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical harnesses.
- Reconnect Battery and Clear Codes: Reconnect the battery. While the module is plug-and-play, it’s good practice to use a basic OBD2 scanner to clear any stored fault codes from the vehicle’s memory.
Will this TCM fit my vehicle?
This module is a guaranteed fit for 2008, 2009, 2010, 2011, and 2012 Chevrolet Colorado and GMC Canyon trucks. It is also compatible with a wide range of other GM vehicles from 2006-2014. Please verify your part number or contact us with your VIN to confirm compatibility.
What does ‘VIN Programmed’ mean?
VIN programming means we load your vehicle’s specific identification number and corresponding software onto the module before shipping it. This allows the module to communicate correctly with your truck’s other computers, eliminating the need for expensive dealership programming. It’s a true plug-and-play installation.
Do I need to return my old TCM?
No, there is no core charge for this part. You can keep your old module, recycle it, or dispose of it at your convenience. This saves you the time and hassle of managing a core return.
What if I still have problems after installation?
While this programmed 2008-2012 Colorado TCM resolves the vast majority of electronic transmission faults, shifting issues can also be caused by mechanical problems (like worn clutches or a bad valve body) or faulty wiring. If problems persist, we recommend a thorough inspection of the transmission wiring harness and a check of the transmission fluid level and condition.
Is there a warranty?
Yes, this part comes with a one-year warranty, giving you peace of mind and confidence in your repair. We stand behind the quality and reliability of our programmed electronic modules.