Restore Crisp, Reliable Shifting to Your GMC Canyon
Is your 2008-2012 GMC Canyon struggling with its automatic transmission? If you’re dealing with abrupt shifts, getting stuck in gear, or seeing that dreaded check engine light, a failing Transmission Control Module (TCM) is the most likely culprit. As a technician with over 20 years of experience, I’ve seen how a faulty TCM can make a perfectly good truck feel unreliable. This T42 series TCM, part number 24235753, is the definitive solution. It arrives pre-programmed to your truck’s specific VIN, making it a true plug-and-play fix that restores the smooth, predictable performance you depend on.
A Technician’s Notebook: The Intermittent Ghost
A customer brought in a 2011 Canyon complaining of random, harsh 1-2 shifts and occasionally getting stuck in 3rd gear (limp mode), but only after driving for 20+ minutes. The codes were intermittent, making it a diagnostic headache. We checked the wiring and solenoids, which all tested fine. From experience, I know these T42 modules can suffer from internal solder joint fractures due to heat cycles. We swapped in a VIN-programmed module, and the problem vanished instantly. It’s a classic case where the component itself is the point of failure, and this direct-fit, pre-programmed part saved the customer hundreds compared to a dealership diagnosis and repair.
Is Your Canyon Exhibiting These Transmission Faults?
A failing TCM doesn’t always mean a complete transmission failure. Often, the signs are electronic. Watch out for these common indicators that point directly to the TCM:
- ✔ Harsh, slamming, or delayed gear shifts.
- ✔ The vehicle enters “limp mode,” refusing to shift out of a single gear.
- ✔ Check Engine Light or Transmission Warning Light is illuminated with codes like P0700, P0750, or other solenoid-related DTCs.
- ✔ Inability to upshift or downshift as you accelerate or decelerate.
- ✔ A noticeable decrease in fuel economy due to inefficient shifting.
- ✔ Unpredictable communication errors with the Powertrain Control Module (PCM).
Why Our Pre-Programmed 2008-2012 Canyon TCM is the Superior Choice
This isn’t just a replacement part; it’s a complete solution. By programming the module to your VIN before it ships, we eliminate the most difficult and expensive step of the repair. You get a component that communicates flawlessly with your truck’s systems right out of the box, ensuring all shift points and torque converter lockup strategies are perfectly calibrated for your specific vehicle. Built to meet or exceed original equipment standards, this module is engineered for durability and long-term reliability.
Your Step-by-Step Guide to a Quick Installation
For the 2008-2012 GMC Canyon, this is a job most DIYers can handle in their own driveway in under an hour. The module is located in the engine bay for easy access.
- Safety First: 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 Canyon, the TCM is typically found in the right-hand rear of the engine compartment. It’s a silver box with electrical connectors.
- Disconnect and Remove: Carefully unclip the wiring harnesses. Then, unbolt the old TCM from its mounting bracket and remove it from the vehicle.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the wiring harnesses. Ensure they click into place.
- Final Steps: Reconnect the battery terminal. While our programming handles the critical setup, it’s good practice to use a basic OBD2 scanner to clear any stored fault codes from the previous module. Start the truck and enjoy your smooth-shifting transmission!
Verified Vehicle Compatibility
This T42 Transmission Control Module is a direct-fit replacement for the following vehicles, among many others. Please verify your part number (24235753) or contact us with your VIN to confirm compatibility.
- GMC CANYON 2008-2012 (Transmission; RH rear engine compartment)
- CHEVROLET COLORADO 2008-2012 (Transmission; RH rear engine compartment)
- HUMMER H3 2008-2010 (Transmission; RH rear engine compartment)
- And many other GM cars, trucks, and SUVs from 2006-2014. See full list for details.
Frequently Asked Questions
Do I need to take my truck to the dealership for programming?
No. This module comes fully programmed to your vehicle’s VIN. It is a plug-and-play installation, requiring no further dealer intervention or special tools.
Is this a difficult part to install myself?
Not at all. For a GMC Canyon, the TCM is easily accessible in the engine bay. With basic hand tools, most people can complete the swap in under 30-60 minutes.
Will this fix a P0700 trouble code?
Yes. A P0700 code is a generic fault request from the TCM to the main computer. If the TCM itself is faulty, replacing it with this pre-programmed unit will resolve the root cause of that code and related transmission codes.
What is the warranty on this part?
This module is backed by our comprehensive one-year warranty, giving you peace of mind and confidence in your repair.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old part or dispose of it without the hassle of returning it.