Is Your 2009-2012 GMC Canyon Running Rough?
If your GMC Canyon is experiencing perplexing issues like random stalling, a persistent check engine light, poor fuel economy, or a complete no-start condition, the culprit is often the Engine Control Module (ECM). As the central computer of your truck’s engine, the ECM is responsible for managing everything from fuel injection and ignition timing to emissions controls and transmission shifting. When it fails, it can cause a wide range of symptoms that can be difficult to diagnose, leaving you stranded and frustrated.
Don’t let a faulty computer sideline your truck. This direct-replacement Engine Control Module, part number 12628911, is the definitive solution to restore your vehicle’s performance, reliability, and efficiency. We take the guesswork and hassle out of the repair by pre-programming the module specifically for your truck using your Vehicle Identification Number (VIN). This ensures a seamless, plug-and-play installation without requiring an expensive trip to the dealership for programming.
From the Diagnostic Bay
We had a 2011 Canyon come into the shop with a complaint of intermittent stalling and a flashing check engine light. The owner had already replaced the spark plugs, ignition coils, and even the fuel pump based on advice from online forums, but the problem persisted. After connecting our diagnostic scanner, we found communication error codes with the ECM. Instead of continuing to replace parts, we swapped in a known-good, programmed ECM. The truck fired right up and ran perfectly. This is a classic case where the root cause was the vehicle’s main computer, not the individual components it controls. A faulty ECM can send you on a wild goose chase, costing you time and money.
Symptoms of a Failing 2009-2012 Canyon Engine Module
- ✔ Persistent Check Engine Light (CEL) that won’t clear or returns immediately.
- ✔ Unexplained drop in fuel mileage.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Rough or erratic idling.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Transmission shifting issues or getting stuck in a gear.
- ✔ Error codes related to module communication (e.g., U-codes).
- ✔ Misfire codes even after replacing coils and plugs.
The Plug-and-Play Solution
The biggest hurdle when replacing a modern ECM is the need for vehicle-specific programming. An unprogrammed module simply will not work. Our service eliminates this problem entirely. When you place your order, you provide us with your truck’s VIN. Our technicians then use official GM equipment to flash the module with the latest factory software updates specific to your vehicle’s configuration. When the part arrives at your door, it’s ready for immediate installation. Just disconnect the battery, swap the modules, and reconnect the battery. In most cases, the vehicle will start and run perfectly, with all previous electronic issues resolved.
Why Choose Our Programmed ECM?
This isn’t just a replacement part; it’s a comprehensive solution. By purchasing our programmed 2009-2012 Canyon Engine Module, you are getting a component that is verified for function and loaded with the most current software from General Motors. This can often resolve underlying drivability issues that were present even before the original module completely failed. This module is a direct fit for a wide range of GM vehicles and is interchangeable with numerous service numbers, including 12636659, 12639300, 12628993, 12625453, and more, ensuring broad compatibility.
Restoring your vehicle’s core electronic system is a critical repair. Trust a professionally programmed module to get the job done right the first time. Get your Canyon back on the road with the reliability and performance you expect. This is the most efficient and cost-effective way to fix complex engine management problems.
Frequently Asked Questions
Do I need to send you my old ECM?
No, there is no core charge or requirement to send your old module to us. This is a direct purchase, which simplifies the process for you.
What is VIN programming and why is it necessary?
VIN programming loads your vehicle’s specific software onto the ECM. This includes information about your engine size, transmission type, emissions equipment, and other options. Without this programming, the ECM cannot communicate correctly with the other modules in your truck, and the engine will not run properly, if at all.
Is this a difficult part to install myself?
For someone with basic mechanical skills, the installation is straightforward. The ECM on a 2009-2012 Canyon is typically located on the right-hand side of the firewall in the engine bay. The process involves disconnecting the negative battery terminal, unplugging the electrical connectors from the old ECM, unbolting it, and then reversing the process with the new module. Since our module is pre-programmed, no further steps are needed.
Will this fix my check engine light?
If the check engine light and associated diagnostic trouble codes (DTCs) are caused by a faulty ECM, then yes, this replacement part will resolve the issue. We always recommend having a professional diagnosis performed to confirm the ECM is the point of failure before ordering.
What information do you need from me?
We require your vehicle’s 17-digit Vehicle Identification Number (VIN) at the time of purchase. This is essential for us to program the module correctly for your specific truck.
Is this compatible with other GM vehicles?
Yes, this ECM (part number 12628911 and its interchanges) fits a wide variety of GM vehicles from 2009-2012, including the Chevy Colorado, Hummer H3, Cadillac STS, and others. Please check the detailed fitment list on this page to confirm compatibility with your specific make, model, and engine.