Restore Peak Performance to Your Cadillac ELR
Is your 2014-2016 Cadillac ELR experiencing frustrating issues like stalling, erratic engine behavior, or a persistent Check Engine light? These are classic signs of a failing Engine Control Module (ECM), the central computer of your vehicle. When the ECM falters, it can cause a cascade of problems that are often misdiagnosed. This isn’t just an inconvenience; it’s a critical failure that affects your car’s reliability and fuel efficiency. For over two decades in the shop, I’ve seen how a faulty ECM can turn a perfectly good car into a source of constant headaches. That’s why we offer a dependable, straightforward solution.
This genuine GM Engine Control Module, part number 22819494, arrives at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We handle the complex part for you. By loading the latest GM-certified software before shipping, we eliminate the need for an expensive trip to the dealership for programming. This is a direct-fit replacement, designed to restore the precise fuel delivery, ignition timing, and transmission shifting your ELR was built for. Installing this 2014-2016 ELR Engine Control Module is the most effective way to solve deep-rooted electronic issues and get your sophisticated vehicle running smoothly again.
From the Diagnostic Bay
I remember a 2015 ELR that came into my shop with a bizarre set of symptoms. The owner complained of intermittent power loss and a transmission that seemed to have a mind of its own, but there were no consistent fault codes—just a general communication error (U0100) that would pop up and disappear. We checked the wiring, tested sensors, and everything seemed fine. It was only after connecting a scope that we saw the ECM’s voltage output was dropping erratically under load. The module itself was failing internally. We replaced it with a pre-programmed unit like this one, and the car ran perfectly. It’s a textbook example of how a failing 2014-2016 ELR Engine Control Module can mimic a dozen other problems.
Is Your Vehicle Showing These Signs of ECM Failure?
A failing ECM can manifest in many ways. If you’re experiencing any of the following, this module is likely the solution you need. Look out for these common indicators:
- ✔ Check Engine Light is illuminated with codes like P0601 (Internal Control Module Memory Check Sum Error), P0606 (ECM/PCM Processor Fault), or U0100 (Lost Communication With ECM/PCM).
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained drops in fuel economy.
- ✔ Rough idling, stalling, or hesitation during acceleration.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Apparent loss of spark or fuel injector pulse.
A Straightforward Guide to Installation
Replacing the ECM is a manageable job for a confident DIYer. With our pre-programmed module, you skip the hardest part. Follow these general steps to get back on the road:
- Safety First: Always disconnect the negative terminal from your vehicle’s 12V battery and wait a few minutes for the system to fully discharge.
- Locate the ECM: On the 2014-2016 ELR, the Engine Control Module is typically found in the left-hand rear of the engine compartment.
- 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 pins for any corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the mounting hardware, as you will need it for the new unit.
- Install the New Module: Mount the new ECM securely onto the bracket and reconnect the wiring harnesses. Ensure they click firmly into place.
- Reconnect the Battery: Reattach the negative battery terminal.
- Perform Relearn Procedure: While the module is programmed, your vehicle may require a security or crankshaft position sensor relearn procedure. This can often be done without special tools (e.g., turning the key to ‘ON’ for 10-15 minutes). Consult a service manual for your specific vehicle’s requirements.
Verified Vehicle Compatibility
This ECM is a direct replacement for multiple GM vehicles and part numbers, including 12668866, 12668994, 12643636, and 22819494. While this listing is focused on the 2014-2016 ELR Engine Control Module, it also fits the following models. Please verify your part number or contact us with your VIN to ensure perfect fitment.
- Cadillac ELR: 2014-2016
- Chevrolet Cruze: 2012-2016 (1.4L & Gasoline)
- Chevrolet Sonic: 2012-2016 (1.4L)
- Chevrolet Trax: 2013-2016
- Chevrolet Volt: 2011-2015
- Chevrolet Spark: 2014-2015 (Gasoline)
- Buick Encore: 2013-2016 (1.4L)
- Chevy Express / GMC Savana Vans (2500/3500): 2016 (4.8L, 6.0L)
- Chevy Silverado / GMC Sierra Trucks (2500/3500): 2012-2016 (6.0L)
- And more.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We will program the module with the latest GM software specific to your vehicle before shipping.
Is any additional programming required after installation?
In most cases, no. Our programming covers the core engine and transmission functions. However, some vehicles may require a simple, key-on security relearn or a Crankshaft Position Sensor (CASE) relearn, which can sometimes be done without a scan tool.
Will this fix my specific problem?
This module is a direct solution for a failed ECM. If your vehicle has been properly diagnosed with a faulty ECM (e.g., internal processor codes like P0601), then this part will resolve the issue. It will not fix problems caused by other failed components like sensors or wiring.
What does ‘flashed with the newest updates’ mean?
It means we load the module with the most current software version released by General Motors for your vehicle’s VIN. This often includes improvements for fuel economy, emissions, and drivability that your old module may not have had.
Is this a used part?
This is a high-quality, inspected, and tested recycled OEM part. Each unit is verified to be fully functional before being programmed and shipped, offering OEM reliability at a fraction of the cost of a new part from a dealer.