Is Your Chevy Trax Stalling, Running Rough, or Not Starting?

As a mechanic with two decades of diagnostic experience, I know the frustration of a vehicle that just won’t cooperate. When a 2013 or 2014 Trax starts acting up—hesitating, throwing random check engine lights, or suffering from terrible fuel mileage—the root cause is often the very brain of the engine: the Electronic Control Module (ECM). A failing ECM can turn a reliable daily driver into a constant source of stress. This isn’t just an inconvenience; it’s a critical failure that needs a reliable solution.

The Direct-Fit, Programmed Solution You Need

This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine GM-spec ECM and professionally program it to your vehicle’s exact Vehicle Identification Number (VIN) before it ever leaves our facility. This ensures it’s loaded with the latest GM software updates for optimal performance and efficiency.

• ✔ VIN-Programmed for Your Trax: We flash the module specifically for your vehicle. Just provide your VIN after purchase, and we handle the rest.
• ✔ No Expensive Dealer Trip: This module arrives ready for installation. No need to pay for towing or costly dealership programming fees.
• ✔ Solves Common ECM Failures: Effectively corrects issues like false sensor codes, harsh shifting, stalling, and no-start conditions.
• ✔ Latest GM Software: Benefit from the most recent factory updates for improved engine management and emissions control.

“A customer’s 2014 Trax came into my shop last week with a persistent check engine light and a no-start condition after warming up. They had already replaced the crank sensor with no luck. A quick data scan showed no communication from the ECM. After confirming power and ground were good, we identified a classic internal ECM failure. Swapping in a pre-programmed module like this one had them back on the road in under an hour. It’s the most common failure I see on these 1.8L engines.”

Plug-and-Play Installation Guide for your 2013-2014 Trax ECM

Replacing the ECM on your Trax is a straightforward job you can do in your own driveway. Follow these steps for a successful installation:

1. Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all systems to power down completely.
2. Locate the ECM: On the 2013-2014 Trax, the ECM is typically located in the engine bay, often near the battery or firewall.
3. Disconnect Connectors: Carefully release the locking tabs on the electrical connectors and pull them straight out from the old ECM. Never force them.
4. Remove Old Module: Unbolt the mounting hardware holding the old ECM in place and remove it from the vehicle.
5. Install New Module: Mount your new, pre-programmed ECM in the same location and secure it with the original hardware.
6. Reconnect and Secure: Plug the electrical connectors firmly into the new module until they click, ensuring a secure connection. Reconnect the negative battery terminal.
7. Final Step: Start the engine. It may take a couple of cycles for the vehicle to fully recognize the new module. Let it idle for a few minutes. Your check engine light should be off and the vehicle should run smoothly.

Guaranteed Compatibility and Fitment

This module is a direct replacement for several original equipment part numbers. If your old module has one of the following numbers, this part is a guaranteed match:

12679199, 12642927, 12636386, 12621466, 12630789

This Module Also Fits These Vehicles:

• CRUZE: 2011-2012 (with 1.8L engine)
• AVEO: 2009-2011
• SPARK: 2013
• WAVE: 2009-2010
• TRAX: 2013-2014 (with 1.8L engine)
• SONIC: 2012 (with 1.8L engine)
• G3: 2009-2010