Restore Dependable Shifting to Your GMC Canyon
As a technician with over two decades of experience, I’ve seen firsthand how frustrating transmission problems can be, especially in a workhorse truck like the GMC Canyon. When your truck starts shifting harshly, hesitates, or gets stuck in a single gear, it’s not just an annoyance—it’s a problem that sidelines your vehicle. The culprit is often a failed Transmission Control Module (TCM), the electronic brain responsible for every gear change. This VIN-programmed T42 TCM is the definitive solution, designed to restore the smooth, reliable performance you depend on.
This isn’t just a replacement part; it’s a complete, ready-to-install fix. We pre-program each module to your truck’s specific Vehicle Identification Number (VIN), ensuring it communicates flawlessly with your engine and transmission right out of the box. This critical step eliminates the need for an expensive trip to the dealership for programming, saving you both time and money. It’s the same process we use in the shop to guarantee a successful repair on the first try.
From the Diagnostic Bay
I remember a 2011 Canyon that came into my shop with a classic case. The owner was a contractor who relied on his truck daily. It was stuck in ‘limp mode’ (3rd gear only) and had the check engine light on with a P0700 (Transmission Control System Malfunction) code. He was worried about a full transmission rebuild. After confirming the wiring and solenoids were good, we pinpointed the TCM. Heat cycles and vibrations, especially where it’s mounted on the RH rear of the engine compartment in these trucks, had taken their toll on the internal circuits. We installed one of our pre-programmed modules, cleared the codes, and had him back on the road in under an hour. He called a week later, thrilled that his truck was shifting better than it had in years. That’s the difference a quality, correctly programmed module makes.
Is Your Canyon Showing These Telltale Signs?
A failing TCM will give you clear warnings. If you’re experiencing any of the following, it’s highly likely your module is the problem. This part is engineered to resolve these exact issues:
- ✔ Harsh, slamming, or erratic gear shifts.
- ✔ Vehicle is stuck in limp mode and won’t shift out of 2nd or 3rd gear.
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, or other solenoid-related faults.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ Poor fuel economy and a feeling of sluggish performance.
A Straightforward Guide to Installation
One of the best features of this module is its simple installation, making it a perfect job for a DIY enthusiast or a professional mechanic. For the 2008-2012 Canyon TCM, you’ll find it in the engine bay.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts and to help reset the system.
- Locate the Module: On the GMC Canyon and its sibling, the Chevy Colorado, the TCM is typically mounted on the right-hand (passenger side) rear of the engine compartment.
- Disconnect and Remove: Carefully unplug the electrical connectors. Note the locking tabs to avoid damage. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical harnesses.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s best practice to use a basic OBD2 scan tool to clear any stored fault codes from the vehicle’s memory. Start the truck and enjoy smooth shifting!
Verified Vehicle Compatibility
This module, also known by part numbers 24235340, 24252114, and 24234503, offers broad compatibility across the GM family. While this listing is specific to the Canyon, it also fits many other vehicles. Please verify your part number or contact us with your VIN to ensure perfect fitment.
- GMC Canyon: 2008, 2009, 2010, 2011, 2012 (Transmission; RH rear engine compartment)
- Chevrolet Colorado: 2008, 2009, 2010, 2011, 2012 (Transmission; RH rear engine compartment)
- Hummer H3: 2008, 2009, 2010 (Transmission; RH rear engine compartment)
- …and many other GM cars, trucks, and SUVs from 2006-2014. See the full fitment list for details.
Frequently Asked Questions
Do I need to get this module programmed by a dealer?
No. This is the biggest benefit we offer. We program the module to your vehicle’s VIN before shipping, so it arrives ready for plug-and-play installation. This saves you from dealership costs and scheduling hassles.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module or recycle it locally without the need to send it back to us, making the process simpler for you.
What tools do I need for the installation?
Basic hand tools are all that’s required. Typically, you’ll just need a socket set to remove the mounting bolts and potentially a small flathead screwdriver to help release the connector clips. No special electronic tools are needed.
Will this fix my P0700 check engine light code?
Yes. If the P0700 code is being triggered by an internal TCM failure (which is very common), this replacement module is designed to resolve the root cause and, once old codes are cleared, will keep the light off.
What is the warranty on this part?
We stand behind our products with a one-year warranty, giving you peace of mind that you’re investing in a reliable, quality-tested part for your truck.