Restore Peak Performance and Reliability to Your Chevy Trax
Is your 2013-2016 Chevy Trax suffering from baffling electrical issues, a persistent check engine light, or frustrating drivability problems like stalling and poor fuel economy? The Engine Control Module (ECM), the brain of your vehicle, is often the culprit. When it starts to fail, it can cause a cascade of problems that are difficult to diagnose. As a technician with over two decades of experience, I’ve seen how a faulty ECM can turn a reliable vehicle into a source of constant headaches. This replacement module is the definitive solution to restore your vehicle’s factory performance and peace of mind.
This isn’t just a part in a box; it’s a complete, ready-to-install solution. We take the guesswork and extra expense out of the equation by programming this module specifically for your vehicle using your VIN. This critical step ensures that all systems, from the fuel injectors to the transmission, operate exactly as the manufacturer intended. You get a direct-fit part loaded with the latest GM software updates, eliminating the need for a costly trip to the dealership for programming.
A Technician’s Notebook: The Intermittent No-Start
I once had a 2014 Chevy Cruze (which uses a similar ECM) in my bay that was driving its owner crazy. It would randomly refuse to start, but only after it was warm. No check engine light, no consistent codes. We checked the battery, starter, and fuel pump—all were fine. The issue was so intermittent it was nearly impossible to replicate. On a hunch, I monitored the ECM’s internal temperature data and noticed it was spiking right before the no-start condition. The module’s internal processor was failing under heat. We swapped in a VIN-programmed ECM like this one, and the problem vanished instantly. It’s a classic example of how a failing computer can mimic mechanical issues, costing you time and money on unnecessary repairs.
Signs Your Trax Needs a New Brain
A failing ECM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your vehicle’s computer is the root cause of the problem. Replacing your 2013-2016 TRAX Engine Control Module can resolve these issues for good.
- ✔ Persistent Check Engine Light (CEL) that won’t clear.
- ✔ Common diagnostic trouble codes (DTCs) such as P0601 (Internal Control Module Memory Check Sum Error), P0606 (ECM/PCM Processor Fault), or U-series communication codes.
- ✔ Unexplained drops in fuel efficiency.
- ✔ Rough or erratic engine idling.
- ✔ Engine stalling or hesitation during acceleration.
- ✔ The vehicle enters “limp mode” with reduced power.
- ✔ Complete no-start or intermittent starting problems.
- ✔ Issues with automatic transmission shifting.
A Straightforward Guide to Installation
Installing your new ECM is a manageable job for a confident DIYer. Our pre-programming service saves you the most complex step. Just follow this general procedure to get your vehicle running smoothly again.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait about 10 minutes to ensure all systems are powered down.
- Locate the ECM: On most compatible vehicles like the Trax, the ECM is found in the engine bay, often near the battery or firewall. It’s a metal box with large electrical connectors.
- Disconnect and Remove: Carefully unplug the wiring harness connectors. They have locking tabs that need to be released. Once disconnected, unbolt the old module from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed ECM into place. Reconnect the wiring harnesses, ensuring they click securely into position.
- Reconnect Power: Reattach the negative battery terminal and tighten it securely.
- Final Steps: Start the engine. It may run a little rough for the first few minutes as the computer completes its internal checks and relearns idle parameters. Let it idle for 5-10 minutes, then take it for a test drive.
Will This Fit My Vehicle?
This 2013-2016 TRAX Engine Control Module is a direct replacement for part number 12663405 and is also compatible with part numbers 12668866, 12668994, 12643636, 12670335, 22819494, and 12692200. It fits a wide range of GM vehicles. Please verify your vehicle from the list below:
CHEVROLET ELR 2014-2016
CHEVROLET EXPRESS 2500/3500 VAN 2016 (4.8L, 6.0L)
CHEVROLET SILVERADO 2500/3500 PICKUP 2012-2016 (6.0L)
CHEVROLET SONIC 2012-2016 (1.4L)
CHEVROLET SPARK 2014-2015 (Gasoline)
CHEVROLET SUBURBAN 3500 2016
CHEVROLET TRAX 2013-2016
CHEVROLET VOLT 2011-2015
BUICK ENCORE 2013-2016 (1.4L)
GMC SAVANA 2500/3500 VAN 2016 (4.8L, 6.0L)
GMC SIERRA 2500/3500 PICKUP 2012-2016 (6.0L)
GMC SIERRA DENALI 2500/3500 2012-2016 (6.0L)
Frequently Asked Questions
Do I need to do any programming or flashing myself?
No. This is the biggest benefit we offer. We program the module to your vehicle’s specific VIN before we ship it. It arrives ready for installation, saving you a trip to the dealer and hundreds in programming fees.
Where do I find my VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on a plate on the driver’s side dashboard visible through the windshield.
Is this a difficult part to replace?
For someone with basic mechanical skills and tools, this is a very manageable job. The most important part is ensuring the battery is disconnected and the electrical connectors are handled carefully. Our plug-and-play programming makes the process much simpler.
What is the difference between an ECM, PCM, and ECU?
The terms are often used interchangeably. ECM (Engine Control Module) and ECU (Engine Control Unit) typically refer to the same part. PCM (Powertrain Control Module) is a term used when the module controls both the engine and the transmission. For your vehicle, this part serves as the central computer.
What if I order the wrong part?
Providing your VIN during checkout is the best way to guarantee a perfect match. Our system cross-references the VIN with the part number to ensure 100% compatibility before we program and ship the module.