Restore Your Truck’s Shifting Performance
If your 2008-2012 GMC Canyon is suffering from harsh shifts, delayed gear engagement, or is stuck in limp mode, a failing Transmission Control Module (TCM) is the most likely culprit. As the electronic brain of your automatic transmission, the TCM is responsible for every gear change, torque converter lockup, and diagnostic check. When it fails, it can cause a host of frustrating and potentially damaging issues. This replacement T42 TCM, part number 24239224, is the definitive solution, arriving pre-programmed to your truck’s VIN for a true plug-and-play repair.
Case Study: A Tricky Diagnosis
A customer brought in a 2010 GMC Canyon that wouldn’t shift past 2nd gear. The check engine light was on, and his local shop had already replaced two shift solenoids without success. The codes were all over the place—P0753, P0758, and the generic P0700. In my 20+ years of experience, when you see multiple, seemingly unrelated solenoid circuit codes, the problem is rarely the solenoids themselves. It’s usually the module that controls them. We connected our diagnostic equipment and confirmed the TCM was failing intermittently. After installing one of our VIN-programmed modules, all codes were cleared, and the truck shifted perfectly. This is a classic example of how replacing the 2008-2012 Canyon Transmission Module saves time and money on unnecessary parts-swapping.
Is Your Canyon Exhibiting These Telltale Signs?
- ✔ Harsh, slamming, or erratic gear shifts.
- ✔ The vehicle is stuck in a single gear (limp mode).
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) are present, especially P0700 or various solenoid codes (e.g., P0750, P0751, P0752).
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ A noticeable decrease in fuel economy.
- ✔ The transmission seems to slip between gears.
Your Straightforward 30-Minute Installation Guide
Replacing the TCM on your GMC Canyon is a job most DIYers can handle with basic tools. No complex procedures or dealership visits are required. For the 2008-2012 Canyon, the module is typically found in the engine bay.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the Module: On your Canyon, the TCM is located in the right-hand rear of the engine compartment.
- Disconnect and Remove: Carefully unclip the electrical connectors from the old module. 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. You should hear a click as they lock in.
- Final Steps: Reconnect the battery terminal. Start the vehicle and allow it to idle for a few minutes. Use a basic OBD2 scanner to clear any stored fault codes to complete the process.
Why Choose Our Pre-Programmed Module?
The single biggest advantage is our complimentary VIN programming service. We flash the module with the latest GM software specific to your truck’s Vehicle Identification Number before it ships. This means it works right out of the box, restoring factory shift points and communication protocols without needing an expensive trip to the dealer for programming. This service alone can save you hundreds of dollars and significant downtime. This high-quality 2008-2012 Canyon Transmission Module is built to meet or exceed OEM specifications, ensuring a reliable, long-term fix for your transmission woes.
Verified Vehicle Compatibility
This T42 TCM is a direct replacement for a wide range of General Motors vehicles. While this page is focused on the 2008-2012 Canyon Transmission Module, it also fits the following models. Please verify the location noted for your specific vehicle.
- CANYON 08-12 Transmission; (RH rear engine compartment)
- COLORADO 08-12 Transmission; (RH rear engine compartment)
- HUMMER H3 08-10 Transmission; (RH rear engine compartment)
- SAVANA/EXPRESS VANS 06-14 Transmission; (RH engine compartment)
- SILVERADO/SIERRA 1500 07-13 Transmission; (next to battery)
- TAHOE/YUKON 07-09 Transmission; (next to battery)
- IMPALA 06-11 Transmission; (lower air cleaner housing)
- COBALT / G5 / PURSUIT 06-10 Transmission; (LH strut tower)
- HHR 06-11 Transmission; (LH engine compartment)
- And many other GM cars, trucks, and SUVs from 2006-2014.
Frequently Asked Questions
What does VIN programming actually do for me?
VIN programming loads your truck’s specific software and calibration files onto the module before we ship it. This ensures it communicates perfectly with your vehicle’s engine computer and other systems, just like the original part. It makes the installation truly plug-and-play, saving you from a mandatory and costly programming session at a GM dealership.
Will this fix a P0700 trouble code?
Yes, in many cases. The P0700 code is a general fault code that simply means the TCM has detected a problem and requested the check engine light be turned on. If the root cause is a failing TCM, replacing it with this module will resolve the issue and allow the code to be cleared permanently.
Is any special relearn procedure needed after installation?
Generally, no. After installing the module and clearing any old codes with a scanner, the pre-loaded software allows the TCM to adapt to your driving style over the first 50-100 miles. Just drive normally, and the system will fine-tune its shift strategy.
Do I need to return my old part?
No, there is no core charge for this module. You can keep, discard, or recycle your old part without any hassle or additional fees.