Programmed 2010-2012 Canyon ECM 12633264 | Engine Control Module

Restore Your Truck’s Performance and Reliability

Is your 2010-2012 GMC Canyon running rough, stalling unexpectedly, or refusing to start? A failing Engine Control Module (ECM) is often the culprit behind these frustrating and hard-to-diagnose issues. As the central computer of your vehicle, the ECM governs everything from fuel mixture and ignition timing to transmission shifts. When it starts to fail, it can throw your entire system into chaos, leaving you with a truck you can’t depend on. I’ve seen it in my shop hundreds of times: a vehicle owner chases down sensor after sensor, only to find the root problem was the main computer all along.

This isn’t just another part; it’s the solution to get your truck back to factory-spec operation. We take the guesswork and hassle out of the repair by pre-programming this genuine GM ECM, part number 12633264 (also interchangeable with 12678513), specifically to your truck’s Vehicle Identification Number (VIN). This means it arrives at your door ready for installation, loaded with the latest GM software updates. You avoid expensive dealership programming fees and complex diagnostic tool requirements, making this a straightforward fix for both seasoned mechanics and determined DIYers.

Diagnosing a Faulty 2010-2012 Canyon ECM

Identifying a failing ECM can be tricky because its symptoms often mimic other component failures. However, a faulty computer typically presents a specific cluster of problems. If your truck is experiencing several of the issues below, there’s a strong probability that the ECM is the source. A healthy computer is essential for optimal fuel economy, emissions compliance, and smooth engine operation. Replacing a failing unit can solve multiple problems at once.

Common Signs of a Failing Engine Computer

• ✔ Check Engine Light is on with internal processor fault codes (e.g., P0601, P0606).
• ✔ Engine cranks but refuses to start.
• ✔ Unexplained drops in fuel economy.
• ✔ Rough or erratic idling and stalling.
• ✔ Communication errors with scan tools (e.g., U0100).
• ✔ Harsh or incorrect automatic transmission shifting.
• ✔ Misfires or loss of power under load.

A Straightforward Guide to Installation

1. ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
2. ✔ Locate the ECM: On the 2010-2012 Canyon, the ECM is typically located on the right-hand (passenger side) firewall in the engine bay.
3. ✔ Disconnect Connectors: Carefully unplug the wiring harness connectors from the old ECM. There are usually release tabs that need to be pressed or lifted. Avoid pulling on the wires themselves.
4. ✔ Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the mounting hardware, as you will need it for the new module.
5. ✔ Install the New ECM: Mount your new, pre-programmed ECM onto the bracket using the original hardware.
6. ✔ Reconnect Everything: Securely plug the wiring harness connectors into the new module. You should hear or feel a click. Reconnect the negative battery terminal.
7. ✔ Perform Security Relearn (If Necessary): In some cases, a simple security relearn procedure may be required. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. Consult your owner’s manual for specific instructions for your vehicle.

Verified Vehicle Compatibility

This module is a direct-fit replacement for a wide range of GM vehicles equipped with specific engines. Please verify your vehicle, year, and engine options below. Providing your VIN at checkout is mandatory to ensure we send you a perfectly matched and programmed part.

• CANYON 2010-2012: Electronic Control Module; (RH firewall), 5.3L
• COLORADO 2010-2012: Electronic Control Module; (RH firewall), 5.3L
• HUMMER H3 2010: Electronic Control Module; (RH firewall), 5.3L
• CAMARO 2012: Electronic Control Module; 3.6L or 6.2L, with ID 12633264
• CAMARO 2013-2015: Electronic Control Module; 6.2L, VIN P (8th digit, opt LSA)
• CORVETTE 2010-2013: Electronic Control Module; (RH engine compartment), 6.2L, VIN R or T (8th digit, opt LS9)
• CTS 2010-2013: Electronic Control Module; (RH front engine compartment), 6.2L
• CTS 2014: Electronic Control Module; Coupe, Sedan, or Wagon, 6.2L
• CTS 2015: Electronic Control Module; Coupe
• MALIBU 2010-2012: Electronic Control Module; 3.6L

Do I need to get this programmed by a dealer?

No. We handle all the programming for you before shipment. Simply provide your vehicle’s VIN during checkout, and the module will arrive ready to install with the latest GM software updates for your specific vehicle.

Where is the ECM located on my 2011 GMC Canyon?

The ECM is mounted to the firewall on the passenger side of the engine compartment. It’s a silver metal box with several large electrical connectors.

What happens if I install it without providing my VIN?

The module will not function correctly. The VIN-specific programming is essential for the ECM to communicate with your truck’s other modules, anti-theft system, and engine parameters. We require your VIN to complete your order.

Is this part the same as a PCM?

Yes, the terms ECM (Engine Control Module) and PCM (Powertrain Control Module) are often used interchangeably. Both refer to the main computer that controls the engine and, in many cases, the transmission functions.

Will this fix my P0606 Check Engine Light code?

While we can’t guarantee a diagnosis without inspecting the vehicle, a code like P0606 (ECM Processor Fault) very strongly indicates an internal failure of the computer itself. This part is the correct solution for that specific fault code, provided the vehicle’s wiring is intact.