Is Your GM Vehicle Running Rough? The ECM Might Be the Culprit.
If you’re dealing with a frustrating check engine light, unexplained stalling, poor fuel mileage, or a no-start condition in your Chevrolet Spark, Cruze, Sonic, or other compatible GM model, a failing Engine Control Module (ECM) is a very likely cause. The ECM is the central computer of your vehicle, responsible for managing everything from fuel injection and ignition timing to transmission shifting. When it fails, it can create a cascade of problems that are difficult to diagnose and can leave your vehicle unreliable or completely inoperable. This direct-fit ECM, part number 22819494, is the definitive solution to restore your vehicle’s performance and reliability.
From the Diagnostic Bay
We once had a 2013 Chevy Cruze come into the shop with a ghost of a problem. The owner complained of intermittent stalling at stoplights, but it would always start right back up. There were no consistent trouble codes, just a few random communication errors that would come and go. We checked wiring, sensors, and fuel pressure—all were fine. After hours of diagnostics, we focused on the ECM. On a hunch, we monitored the ECM’s internal temperature data and noticed it would spike just before a stall. We swapped in a pre-programmed ECM, and the problem vanished instantly. The original unit had an internal fault that only appeared when it got hot. A pre-programmed module like this one saved the customer hundreds in further diagnostic fees and got them back on the road with confidence.
Common Symptoms of a Failing GM ECM
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine misfires, stumbles, or runs rough.
- ✔ Unexplained stalling, especially when warm or at idle.
- ✔ Complete no-start condition where the engine cranks but won’t fire.
- ✔ Noticeable decrease in fuel economy.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Inability for diagnostic scan tools to communicate with the module.
- ✔ Other electronic systems acting erratically.
The Simple, Plug-and-Play Solution: A VIN-Programmed 2014-2015 Spark ECM
Don’t waste time and money at the dealership with expensive diagnostics and programming fees. We take the guesswork out of the repair. When you order this module, you provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). Our technicians then use official GM equipment to flash the unit with the latest, most up-to-date software specific to your exact vehicle. This ensures perfect compatibility and optimal performance right out of the box. This isn’t just a replacement; it’s a restoration of your vehicle’s core electronic functions with the newest software available from the manufacturer.
Wide-Ranging GM Compatibility
While this is a perfect fit for the 2014-2015 Spark ECM, this versatile module is also the correct component for a huge range of popular GM vehicles. It directly replaces part numbers 12668866, 12668994, 12643636, 12663405, 12670335, and 12692200. Please check the detailed fitment list to confirm this part is correct for your specific year, make, model, and engine option. It is commonly found in:
- Chevrolet Cruze & Volt
- Chevrolet Sonic & Trax
- Buick Encore
- Cadillac ELR
- GMC Sierra & Chevrolet Silverado (6.0L)
- GMC Savana & Chevrolet Express Vans
Frequently Asked Questions
What exactly does an ECM do?
The Engine Control Module (ECM), also known as a Powertrain Control Module (PCM), is your car’s main computer. It takes data from sensors all over the engine and vehicle to control fuel delivery, spark timing, emissions systems, and transmission operation to ensure the vehicle runs efficiently and smoothly.
Is this part truly ‘plug-and-play’?
Yes, for the most part. Because we program the module to your specific VIN, it eliminates the need for dealer programming. In some cases, your vehicle may require a simple ‘Security Relearn’ or ‘CASE Relearn’ procedure after installation, which can often be performed without special tools. Instructions for these procedures are widely available online or in service manuals.
How do I provide my VIN?
After placing your order, you will need to send us your 17-digit VIN. You can typically find your VIN on the driver’s side dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Will this fix my car’s specific problem?
If your vehicle is exhibiting one or more of the symptoms listed and a qualified mechanic has diagnosed the ECM as the faulty component, then this part is the correct solution. It’s crucial to ensure the root cause of the problem has been identified, as other issues (like bad wiring or faulty sensors) can sometimes mimic ECM failure.
What if I order the wrong part?
We strongly encourage you to verify the part number on your existing module and consult our detailed fitment list. Since this part is programmed specifically for your vehicle’s VIN, it is critical to ensure it is the correct part for your application before ordering.