Restore Peak Performance to Your GM Vehicle
As a technician with over two decades of experience under the hood, I’ve seen firsthand the frustration a failing Engine Control Module (ECM) can cause. Your 2014-2015 Chevrolet Spark might be running rough, refusing to start, or showing a persistent Check Engine Light that just won’t go away. These aren’t just annoyances; they’re signs that the very brain of your engine is in trouble. The ECM is responsible for everything from fuel mixture and ignition timing to transmission shifting. When it falters, your vehicle’s reliability and efficiency plummet.
This isn’t just another part. This is a complete, ready-to-install solution. We take a quality, inspected ECM and flash it with the latest, most stable software directly from GM. The key is that we program it specifically to your vehicle’s VIN before it even leaves our facility. This critical step eliminates the need for expensive dealership programming or specialized scan tools, saving you hundreds of dollars and significant time. You get a component that is truly plug-and-play, designed to restore the precise performance your vehicle had when it left the factory.
From the Diagnostic Bay: The Intermittent Stall Case
I remember a 2014 Chevy Spark that came into my shop with a maddeningly intermittent stalling problem. The owner had been to two other shops, replaced the fuel pump and spark plugs, but the issue persisted. No consistent codes were stored, just a history of random communication faults. After ruling out wiring and power supply issues, my experience pointed to the ECM. On the surface, the module looked fine, but under load and heat, it was failing internally, causing the processor to reset. We installed one of these VIN-programmed modules, and the problem was solved instantly. It’s a perfect example of how a failing ECM can mimic other problems, making a reliable, pre-programmed replacement the most effective fix.
Is Your Vehicle’s Brain Failing? Common ECM Symptoms
A faulty ECM can manifest in numerous ways. If you’re experiencing any of the following, a failing engine computer could be the culprit. In my shop, these are the classic red flags I look for when diagnosing a potential ECM issue.
- ✔ Check Engine Light is on with no clear cause.
- ✔ Engine cranks but refuses to start.
- ✔ Noticeable decrease in fuel economy.
- ✔ Rough idling, stalling, or hesitation during acceleration.
- ✔ Transmission shifting issues or getting stuck in gear.
- ✔ Loss of spark or incorrect fuel injector pulse.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0601 (Internal Control Module Memory Check Sum Error), P0606 (ECM/PCM Processor Fault), or U0100 (Lost Communication With ECM/PCM).
Your Step-by-Step ECM Installation Guide
Installing your new 2014-2015 Spark ECM is a straightforward process for a DIYer with basic tools. Following these steps ensures a safe and successful replacement.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow the system to fully discharge.
- Locate the ECM: On most compatible vehicles, the ECM is found in the engine bay. Its specific location can vary, so consult a vehicle-specific repair manual if you’re unsure.
- Disconnect Connectors: Carefully release the locking tabs on the wiring harness connectors and pull them straight out from the module. Never force them. Inspect the connectors for any corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. There are typically a few bolts holding it in place.
- Install the New Module: Mount your new, pre-programmed ECM onto the bracket and secure it with the bolts. Reconnect the wiring harnesses, ensuring they click securely into place.
- Reconnect the Battery: Reattach the negative battery terminal.
- Perform Security Relearn: In many GM vehicles, a security relearn procedure (often called a Passlock or Passkey relearn) is required. This simple procedure typically involves turning the key to the ‘ON’ position for 10-15 minutes and can be done without special tools. Check your owner’s manual for the specific steps for your vehicle.
Verified to Fit These GM Models
This engine control module is a direct replacement for a wide array of General Motors vehicles, offering broad compatibility. Please verify your vehicle is on this list. This module replaces part numbers: 12668866, 12668994, 12643636, 12663405, 12670335, 22819494, and 12692200.
ENCORE 13-16 (1.4L)
Cadillac:
ELR 14-16
Chevrolet:
CRUZE 12-16 (Gasoline models)
SONIC 12-16
SPARK 14-15 (Gasoline model)
TRAX 13-16
VOLT 11-15
EXPRESS 2500/3500 VAN 16 (4.8L, 6.0L)
SILVERADO 2500/3500 PICKUP 12-16 (6.0L)
SUBURBAN 3500 16
GMC:
SAVANA 2500/3500 VAN 16 (4.8L, 6.0L)
SIERRA 2500/3500 PICKUP 12-16 (6.0L)
SIERRA DENALI 2500/3500 12-16 (6.0L)
Why do you need my VIN?
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential because it allows us to program the Engine Control Module with the exact software and calibrations specific to your vehicle’s make, model, year, and options. This ensures perfect compatibility and function right out of the box, avoiding any need for additional dealer programming.
Is this a simple plug-and-play installation?
Yes, for the most part. Because we pre-program the module to your VIN, the complex software work is already done. You will need to physically install the part and, in most cases, perform a simple security relearn procedure which does not require special tools. We provide general instructions to guide you.
Will this fix my car’s specific problem?
This module will correct issues directly caused by a faulty ECM, such as those listed in our symptoms section (e.g., no-start, poor performance, specific internal error codes). However, it’s crucial to properly diagnose your vehicle first, as other components like sensors or wiring can cause similar symptoms. This part will not fix problems unrelated to the ECM itself.
Do I need to send my old ECM back (core charge)?
This listing does not require a core return. You can keep your old module, which saves you the time and expense of shipping it back to us.
What if my part number is not listed but my vehicle is?
This ECM replaces a range of part numbers. If your vehicle model and year are listed in our compatibility chart, this module is the correct fit. The VIN programming ensures it works for your specific application, even if your original part number differs from the primary number 12692200.