Is Your GMC Canyon Running Rough?
If your 2009 to 2012 GMC Canyon is experiencing frustrating issues like stalling at intersections, a persistent check engine light, erratic shifting, or a complete no-start condition, a failing Engine Control Module (ECM) is a very likely culprit. As the central computer for your engine, its proper function is critical. When it fails, it can throw your entire vehicle’s performance into chaos. This isn’t just an annoyance; it’s a reliability issue that needs a solid fix.
A Technician’s Real-World Experience
“A customer’s 2011 Canyon came into my shop last week with the classic symptoms: it would die at stoplights and had a stubborn U0100 ‘Lost Communication with ECM’ code. After I verified the main power and ground circuits to the module were solid—a crucial first step—it was clear the original ECM was internally fried. We installed one of our pre-programmed modules, and the truck fired right up and idled perfectly. The code was gone for good. It’s a common failure point I’ve diagnosed on dozens of these GMT355 platform trucks (Canyon/Colorado).”
The Direct Solution: A Plug-and-Play 2009–2012 Canyon ECM
Forget expensive dealership visits and the hassle of finding a shop that can program a new module. We provide a straightforward, effective solution. This ECM, part number 12630464, arrives at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We load the latest, most stable software from GM, ensuring optimal performance and compatibility right out of the box.
- ✔ VIN Programmed: We flash the module with your truck’s VIN before shipping.
- ✔ No Extra Fees: The price you see includes all programming. No hidden costs.
- ✔ Latest GM Software: Your ECM will have the most current software updates for improved drivability and function.
- ✔ Fixes Common Problems: Directly addresses issues like no-start, stalling, poor fuel economy, and false trouble codes.
- ✔ Wide Compatibility: This module is a direct replacement for multiple service numbers, ensuring a perfect match.
Simple DIY Installation Guide
You can get your truck back on the road in under an hour with basic hand tools. The ECM on the Canyon is typically located on the right-hand (passenger side) firewall in the engine bay.
- Safety First: Disconnect the negative terminal from your truck’s battery.
- Locate the ECM: Find the module on the passenger-side firewall. It will have several large electrical connectors.
- Disconnect Connectors: Carefully unlatch and remove the wiring harness connectors. These plastic tabs can be brittle, so work slowly.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket.
- Install the New Module: Bolt the new ECM into place and securely reconnect the wiring harnesses. You should hear a ‘click’ as they lock in.
- Reconnect Battery: Reattach the negative battery terminal. Your vehicle may need to complete a security relearn procedure, which typically involves cycling the key.
Expert Pro Tip: Before plugging in your new ECM, take 30 seconds to inspect the vehicle’s harness connectors. Look for any signs of corrosion (green or white powder) or bent pins. A poor connection is a frequent cause of intermittent issues and can damage the replacement module. Use a small pick and a can of electronics cleaner to gently clean the terminals for a perfect, lasting connection.
Guaranteed Compatibility
This ECM is a direct replacement for a wide range of GM vehicles and part numbers. Please verify your part number or contact us with your VIN to confirm fitment. This module is interchangeable with the following service numbers: 12636659, 12639300, 1263605, 12628993, 12628911, 12625453, 12622175, 12630464, and 12678512.
While this is a primary fit for the 2009-2012 GMC Canyon and Chevy Colorado, it also fits many other GM models including certain years/engines of the Envoy, STS, Trailblazer, Hummer H3, CTS, SRX, DTS, Saab 9-7X, Corvette, and Lucerne. Match your part number to ensure compatibility.