Restore Smooth Shifting to Your Chevy Colorado
If you’re dealing with the frustration of a transmission that won’t shift correctly, goes into limp mode, or throws confusing error codes, you’ve come to the right place. This T42 Transmission Control Module (TCM) is a direct-fit, reliable solution for your 2008-2012 Chevrolet Colorado. As the electronic brain of your automatic transmission, a failing TCM can cause a host of problems that can make your truck feel unreliable. This replacement module is expertly pre-programmed to your truck’s specific VIN, ensuring it works perfectly right out of the box without a costly trip to the dealership for programming.
From the Diagnostic Bay: A Common Colorado Case
Just last week, a 2011 Colorado came into my shop. The owner was fed up—the truck would randomly refuse to shift out of 2nd gear, and the check engine light was on. He’d already replaced a shift solenoid with no luck. A quick scan showed a P0700 (Transmission Control System Malfunction) code. In my 20+ years of experience, when you see a general code like that coupled with intermittent, unpredictable shifting, the TCM is the prime suspect. We confirmed power and ground were good, pointing to an internal module failure. Installing one of our VIN-programmed T42 modules had his truck shifting like new in under an hour. It’s a common failure, but thankfully, it’s a straightforward fix.
Is Your Colorado Exhibiting These Transmission Faults?
A faulty TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution for your 2008-2012 Colorado TCM issues.
- ✔ Harsh, slamming shifts or delayed gear engagement.
- ✔ Vehicle is stuck in one gear (often called “limp mode”).
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, P0755, or other solenoid-related faults.
- ✔ Complete failure to shift up or down.
- ✔ A noticeable drop in fuel economy.
- ✔ Intermittent loss of communication with the module.
Straightforward 30-Minute Installation Guide
Getting your truck back to peak performance is easier than you think. This is a job most DIYers can handle with basic tools.
- Safety First: Always disconnect the negative terminal from your truck’s battery before starting any electrical work.
- Locate the Module: On the 2008-2012 Chevrolet Colorado, the TCM is conveniently located in the right-hand rear of the engine compartment. It’s a silver box with electrical connectors.
- Disconnect and Remove: Carefully unplug the wiring harness connectors. Then, unbolt the old module from its mounting bracket.
- Install the New TCM: Mount your new, VIN-programmed module in place and securely fasten it. Reconnect the wiring harnesses, ensuring they click into place.
- Final Steps: Reconnect the battery terminal. 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.
Verified Fitment for Your General Motors Vehicle
While this is the perfect solution for the 2008-2012 Colorado TCM, this versatile T42 module is also compatible with a wide range of other GM cars, trucks, and SUVs. Please verify your vehicle is on the list below. This part is interchangeable with service numbers 24242391, 24234503, 24252114, 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 & GMC Sierra 1500/2500 (2007-2013) – Transmission; (next to battery)
- Chevrolet Tahoe & GMC Yukon (2007-2009) – Transmission; (next to battery)
- Chevrolet Express & GMC Savana Vans (2006-2014) – Transmission; (RH engine compartment)
- Buick LaCrosse / Allure (2006-2009) – Transmission; (lower air cleaner housing)
- Cadillac DTS (2006-2011) – Transmission; (RH front engine compartment)
- Chevrolet Impala (2006-2011) – Transmission; (lower air cleaner housing)
- Pontiac G6 (2006-2010) – Transmission; (LH strut tower)
- Saturn Aura (2007-2009) – Transmission; (LH frame rail front)
- …and many other GM models.
Do I need to take my truck to the dealer after installation?
Do I need to take my truck to the dealer after installation?
No. This Transmission Control Module comes pre-programmed to your vehicle’s VIN. This means it is ready for immediate installation and operation, saving you the time and expense of a dealership visit for programming.
Where is the TCM located on my 2009 Chevy Colorado?
For the 2008-2012 Chevrolet Colorado and its counterpart, the GMC Canyon, the TCM is found in the engine bay, specifically mounted on the right-hand (passenger side) rear area of the compartment.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While it can be caused by other issues, a faulty TCM is a very common root cause. Replacing a failing TCM will often resolve the P0700 code and any other related transmission codes.
Is there a core charge for this part?
No, there is absolutely no core charge. You are not required to send your old, faulty module back to us, making the replacement process faster and more convenient for you.