Is your Cadillac ELR, Chevy Cruze, Sonic, or another compatible GM vehicle suffering from perplexing engine issues? Stalling, poor fuel economy, a persistent check engine light, or a complete no-start condition can often be traced back to a failing Engine Control Module (ECM). As the central computer for your engine, the ECM is responsible for managing everything from fuel injection and ignition timing to emissions and transmission shifting. When it falters, the entire vehicle’s performance and reliability are compromised.
This is a direct-fit replacement Engine Control Module, part number 22819494, designed to restore your vehicle’s factory performance. The critical advantage of this module is our professional programming service. Before we ship the part, we flash it with the latest, most stable software updates from General Motors, specifically tailored to your vehicle’s unique Vehicle Identification Number (VIN). This eliminates the need for expensive dealership programming, saving you time, money, and the headache of towing your vehicle. Simply provide us with your VIN after purchase, and you’ll receive a unit that’s ready for installation right out of the box.
Common Symptoms of a Failing ECM
- ✔ Check Engine Light is illuminated, often with communication-related trouble codes (U-codes).
- ✔ Engine cranks but refuses to start.
- ✔ Unexplained drops in fuel efficiency.
- ✔ Rough or erratic idling and stalling.
- ✔ Noticeable loss of engine power and poor acceleration.
- ✔ Automatic transmission shifting issues or harshness.
- ✔ Intermittent electrical problems that seem to have no other cause.
From the Diagnostic Bay
We had a 2015 Chevy Volt come into the shop with an issue that had stumped two other mechanics. The car would run fine for about 15 minutes, then suddenly lose all power and throw a dozen seemingly unrelated codes before stalling. After hours of chasing electrical ghosts, we focused on the ECM. On the surface, it passed basic tests. However, we knew that internal logic failures can be intermittent and heat-sensitive. We swapped in one of our pre-programmed modules matched to the customer’s VIN. The car started instantly and ran perfectly for a 45-minute test drive. The problem wasn’t a bad sensor or wiring; it was the brain itself getting confused. This is a classic case where a reliable, correctly programmed ECM is the only true fix.
Your Direct Solution: The 2014-2016 ELR Engine Control Module
Don’t let a faulty computer keep your vehicle off the road. This module is a dependable solution, ensuring that all engine parameters are managed correctly according to GM’s precise specifications. By programming the unit to your VIN, we ensure it communicates seamlessly with your vehicle’s other systems, including the anti-theft system (immobilizer), transmission control module, and body control module. For many vehicles, the installation is a straightforward plug-and-play process. In some cases, a simple security relearn procedure may be necessary, which can typically be performed without special tools and we can provide instructions for.
Guaranteed Fitment and Compatibility
This ECM is a direct replacement for a wide range of GM vehicles and interchanges with multiple part numbers, including 12668866, 12668994, 12643636, 12663405, and more. While this listing is focused on the 2014-2016 ELR Engine Control Module, it is also the correct part for many model years of the Cruze, Sonic, Volt, Trax, Encore, Spark, and even heavy-duty trucks like the Silverado 2500/3500 and Express/Savana vans. Please verify your part number or consult the detailed fitment list to confirm compatibility with your exact make, model, and engine option. Getting the right part, programmed correctly the first time, is the key to a successful repair.
Frequently Asked Questions
Do I need to have this ECM programmed by a dealer?
No. We handle all the programming for you before shipment. Simply provide your vehicle’s VIN during or after checkout, and the module will arrive ready to install with the latest GM software for your specific vehicle.
What is a VIN and where can I find it?
The VIN is your vehicle’s unique 17-digit identification number. You can find it 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 check engine light?
If the check engine light is on due to a faulty ECM, then yes, this part will resolve the issue. However, it’s always recommended to have the codes scanned to ensure the problem isn’t with a sensor or another component.
Is any other procedure required after I install the module?
In many cases, it is a simple plug-and-play installation. However, some GM vehicles may require a security relearn procedure (also known as a key relearn) to sync the new ECM with your vehicle’s anti-theft system. This is a simple procedure that we can provide instructions for.
Is this compatible with vehicles other than the Cadillac ELR?
Yes, absolutely. This ECM fits a wide variety of GM cars, trucks, and vans, including the Chevy Cruze, Sonic, Volt, Trax, Buick Encore, and Silverado/Sierra pickups. Please check the detailed fitment list on the product page to confirm it matches your vehicle.